Keystone Municipal Water Water System

MyTapWater.org's tap water quality report is the compilation of data collected from federal, state, and local government agencies, most prominently the EPA. We strive to populate the report with the latest data concerning water contaminants, lead and copper levels, and water quality violations. We only collect drinking water data from public water systems.

PWS Service Information
PWS ID: WV3302430
Type: Community water system
EPA Region: 03
Primary Service Area: Residential Area
Primary Source: Ground water
Population Served: 448
Contact Information
SCOTT, VONDELERE A.
SCOTT, VONDELERE A.
KEYSTONE MUNICIPAL WATER
HC 52 BOX 200
KEYSTONE, WV 24868

This public water system services 1 municipality in 1 county.

We could not find test result data for Keystone Municipal Water.
However, this area is serviced by 182 or more other public water systems. Check your water bill to see which specific system applies. Here is a list of related systems:

See 172 more related public water systems »

Summary Results


A summary view of tests in which a water contaminant found to exceed the Maximum Contaminant Level (MCL) set by the EPA.

We couldn't find any records of contaminants exceeding the regulated limits in your water.

Other Water Contaminants Tested


The following contaminants were tested and found to be within national EPA guidelines.

We couldn't find any records of contaminants in your water.

Lead and Copper Data


Lead and copper are recorded separately from other contaminants because of the Lead and Copper Rule. As with all other results, these are the findings at the water supply level. Lead and copper can be — and often are — deposited in drinking water in between the water facility and your tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
WV33041 lead 2008-01-01 2010-12-31 0.00118mg/L

Violations


Known violations of the Safe Drinking Water Act as recorded by the EPA.

Compliance Dates Rule Violation Type Contaminant Name Status
2017-07-01 - 2017-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2017-09-01 - 2017-09-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-09-01 - 2017-09-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2015-01-01 - 2017-08-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Known
2015-01-01 - 2017-08-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Known
2017-08-01 - 2017-08-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-08-01 - 2017-08-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-07-01 - 2017-07-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-07-01 - 2017-07-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-04-01 - 2017-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2017-06-01 - 2017-06-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-06-01 - 2017-06-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-05-01 - 2017-05-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-05-01 - 2017-05-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-04-01 - 2017-04-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-04-01 - 2017-04-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-01-01 - 2017-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2017-03-01 - 2017-03-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-03-01 - 2017-03-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-02-01 - 2017-02-28 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-02-01 - 2017-02-28 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2017-01-01 - 2017-01-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2017-01-01 - 2017-01-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular 2,4-D Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Antimony, Total Known
2014-01-01 - 2016-12-31 Arsenic Monitoring, Regular Arsenic Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Atrazine Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Barium Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Benzene Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Benzo(a)pyrene Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Beryllium, Total Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular BHC-GAMMA Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Cadmium Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Carbofuran Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Chlordane Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Chromium Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular CYANIDE Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Di(2-ethylhexyl) adipate Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Di(2-ethylhexyl) phthalate Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Fluoride Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Heptachlor Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Heptachlor epoxide Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Hexachlorocyclopentadiene Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular LASSO Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Mercury Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Methoxychlor Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Nickel Known
2016-01-01 - 2016-12-31 Nitrates Monitoring, Regular Nitrate Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular OXAMYL Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Picloram Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Selenium Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Simazine Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Styrene Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Known
2014-01-01 - 2016-12-31 Inorganic Chemicals Monitoring, Regular Thallium, Total Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Toluene Known
2014-01-01 - 2016-12-31 Synthetic Organic Chemicals Monitoring, Regular Total Polychlorinated Biphenyls (PCB) Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Known
2014-01-01 - 2016-12-31 Volatile Organic Chemicals Monitoring, Regular Xylenes, Total Known
2016-10-01 - 2016-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2016-12-01 - 2016-12-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-12-01 - 2016-12-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-11-01 - 2016-11-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-11-01 - 2016-11-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-10-01 - 2016-10-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-10-01 - 2016-10-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-07-01 - 2016-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2016-09-01 - 2016-09-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-09-01 - 2016-09-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-08-01 - 2016-08-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-08-01 - 2016-08-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-07-01 - 2016-07-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-07-01 - 2016-07-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-04-01 - 2016-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2016-06-01 - 2016-06-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-06-01 - 2016-06-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-05-01 - 2016-05-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-05-01 - 2016-05-31 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-04-01 - 2016-04-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-04-01 - 2016-04-30 Revised Total Coliform Rule Monitoring, Routine (RTCR) Revised Total Coliform Rule Known
2016-03-01 - 2016-03-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2016-01-01 - 2016-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2016-03-01 - 2016-03-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-02-01 - 2016-02-29 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2016-02-01 - 2016-02-29 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2016-01-01 - 2016-01-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2016-01-01 - 2016-01-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-01-01 - 2015-12-31 Nitrates Monitoring, Regular Nitrate Known
2015-12-01 - 2015-12-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2015-10-01 - 2015-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2015-12-01 - 2015-12-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-11-01 - 2015-11-30 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2015-11-01 - 2015-11-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-10-01 - 2015-10-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2015-10-01 - 2015-10-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-09-01 - 2015-09-30 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2015-07-01 - 2015-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Known
2015-09-01 - 2015-09-30 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-08-01 - 2015-08-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Known
2015-08-01 - 2015-08-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-07-01 - 2015-07-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Known
2015-05-01 - 2015-05-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Returned to Compliance
2015-03-01 - 2015-03-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Returned to Compliance
2015-02-01 - 2015-02-28 Ground Water Rule Treatment Technique (SWTR and GWR) Groundwater Rule Returned to Compliance
2015-01-01 - 2015-01-31 Ground Water Rule Treatment Technique (SWTR and GWR) Groundwater Rule Returned to Compliance
2014-11-01 - 2014-11-30 Ground Water Rule Treatment Technique (SWTR and GWR) Groundwater Rule Returned to Compliance
2014-09-01 - 2014-09-30 Ground Water Rule Treatment Technique (SWTR and GWR) Groundwater Rule Returned to Compliance
2014-03-01 - 2014-03-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2014-01-01 - 2014-03-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Returned to Compliance
2014-02-01 - 2014-02-28 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular 2,4-D Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Antimony, Total Known
2011-01-01 - 2013-12-31 Arsenic Monitoring, Regular Arsenic Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Atrazine Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Barium Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Benzene Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Benzo(a)pyrene Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Beryllium, Total Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular BHC-GAMMA Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Cadmium Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Carbofuran Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Chlordane Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Chromium Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular CYANIDE Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Di(2-ethylhexyl) adipate Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Di(2-ethylhexyl) phthalate Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Fluoride Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Heptachlor Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Heptachlor epoxide Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Hexachlorocyclopentadiene Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular LASSO Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Mercury Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Methoxychlor Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Nickel Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular OXAMYL Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Picloram Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Selenium Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Simazine Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Styrene Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Known
2011-01-01 - 2013-12-31 Inorganic Chemicals Monitoring, Regular Thallium, Total Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Toluene Known
2011-01-01 - 2013-12-31 Synthetic Organic Chemicals Monitoring, Regular Total Polychlorinated Biphenyls (PCB) Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Known
2011-01-01 - 2013-12-31 Volatile Organic Chemicals Monitoring, Regular Xylenes, Total Known
2013-10-01 - 2013-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Returned to Compliance
2013-12-01 - 2013-12-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Returned to Compliance
2013-11-01 - 2013-11-30 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2013-08-01 - 2013-08-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Returned to Compliance
2012-10-01 - 2012-10-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Returned to Compliance
2011-01-01 - 2011-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2011-12-01 - 2011-12-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-11-01 - 2011-11-30 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-10-01 - 2011-10-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-09-01 - 2011-09-30 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-08-01 - 2011-08-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-07-01 - 2011-07-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2011-05-01 - 2011-05-31 Ground Water Rule Monitoring of Treatment (SWTR-Unfilt/GWR) Groundwater Rule Returned to Compliance
2009-09-01 - 2009-09-30 Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
2009-08-01 - 2009-08-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2009-07-01 - 2009-07-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2006-01-01 - 2006-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2006-01-01 - 2006-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2006-01-01 - 2006-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2006-09-01 - 2006-09-30 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2006-07-01 - 2006-07-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2005-01-01 - 2005-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2005-01-01 - 2005-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2005-01-01 - 2005-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2004-01-01 - 2004-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2004-01-01 - 2004-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2004-01-01 - 2004-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2004-07-01 - 2004-07-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2004-06-01 - 2004-06-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2003-08-01 - 2003-08-31 Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
2002-07-01 - 2002-11-08 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular 1,2-DIBROMO-3-CHLOROPROPANE Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular 2,4-D Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular 2,4,5-TP Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Antimony, Total Returned to Compliance
- 2001-12-31 Arsenic Monitoring, Regular Arsenic Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Atrazine Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Barium Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Benzo(a)pyrene Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Beryllium, Total Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular BHC-GAMMA Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Cadmium Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Carbofuran Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Chlordane Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Chromium Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular CYANIDE Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Dalapon Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Di(2-ethylhexyl) adipate Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Di(2-ethylhexyl) phthalate Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Dinoseb Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Endrin Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular ETHYLENE DIBROMIDE Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Fluoride Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Heptachlor Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Heptachlor epoxide Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Hexachlorocyclopentadiene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular LASSO Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Mercury Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Methoxychlor Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Nickel Returned to Compliance
2001-01-01 - 2001-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular OXAMYL Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Pentachlorophenol Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Picloram Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Selenium Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Simazine Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Styrene Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Returned to Compliance
- 2001-12-31 Inorganic Chemicals Monitoring, Regular Thallium, Total Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Toluene Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Total Polychlorinated Biphenyls (PCB) Returned to Compliance
- 2001-12-31 Synthetic Organic Chemicals Monitoring, Regular Toxaphene Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Returned to Compliance
- 2001-12-31 Volatile Organic Chemicals Monitoring, Regular Xylenes, Total Returned to Compliance
2000-07-01 - 2000-10-19 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Antimony, Total Returned to Compliance
- N/A Arsenic Monitoring, Regular Arsenic Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Barium Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Beryllium, Total Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Cadmium Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Chromium Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Fluoride Returned to Compliance
- N/A Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Mercury Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Nickel Returned to Compliance
- N/A Nitrates Monitoring, Regular Nitrate Returned to Compliance
- N/A Nitrates Monitoring, Regular Nitrate Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Selenium Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Styrene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Returned to Compliance
- N/A Inorganic Chemicals Monitoring, Regular Thallium, Total Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Toluene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Returned to Compliance
- N/A Volatile Organic Chemicals Monitoring, Regular Xylenes, Total Returned to Compliance
2015-12-11 - N/A Stage 1 Disinfectants and Disinfection Byproducts Rule Treatment Technique No Certif. Operator Stage 1 Disinfectants and Disinfection Byproducts Rule Open
2014-11-03 - N/A Ground Water Rule Failure to Consult with State Groundwater Rule Open
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Routine Major (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Repeat Major (TCR) Coliform (TCR) Returned to Compliance
- N/A Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Returned to Compliance
2015-02-01 - N/A Ground Water Rule Failure To Address Deficiency Groundwater Rule Open
- N/A Lead and Copper Rule Initial Tap Sampling for Pb and Cu Lead and Copper Rule Returned to Compliance
2004-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
2012-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Open
2014-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Open
2015-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Open
2016-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Open
2016-04-01 - N/A Revised Total Coliform Rule Sample Siting Plan Errors (RTCR) Revised Total Coliform Rule Open
2001-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2003-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2004-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2005-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2006-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2008-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2009-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2014-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Returned to Compliance
2015-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Open
2016-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Open
2017-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule Open
2012-10-01 - N/A Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Consumer Confidence Rule Returned to Compliance
2013-10-01 - N/A Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Consumer Confidence Rule Returned to Compliance
2016-10-01 - N/A Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Consumer Confidence Rule Open
2005-07-30 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2005-08-31 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2006-02-10 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2006-05-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2006-06-25 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2007-02-04 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2007-02-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2009-11-01 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2010-08-28 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2010-10-23 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2012-07-11 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2013-12-05 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2014-02-07 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2014-10-03 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2014-12-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-01-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-01-30 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-02-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-04-11 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-05-01 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-05-02 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-05-06 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2015-11-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-01-11 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-03-28 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-04-30 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-07-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-09-10 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-10-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-11-11 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-11-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-11-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-12-11 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-01-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-02-10 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-02-11 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-02-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-02-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-02-26 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-03-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-04-02 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-04-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-05-12 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-06-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-07-14 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-07-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-08-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-08-16 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2017-09-10 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open

Local Water Testing


Find a lab in your area so you can get your tap or well water tested. This list contains both governmental and private labs, all of which are EPA-certified for drinking water testing.

Unable to identify any nearby water testing labs near 24868.

Water Bill Information


Convenient information about your water service.

Unable to identify any billing information about Keystone Municipal Water (WV3302430).

What My Water Data Means


Water data isn't always easy to interpret, but by following the links on this page you should be able to have most of your questions answered. By clicking the name of a water contaminant or secondary substance you can learn about that specific substance. Ultimately this page should give you some insight towards learning if your water is safe, what water filter you should buy (if any), and how well your local water compares against other sources.

Sources


The origin of MyTapWater.org's water data is explained on our Data Sources page.

Why Is My Water Data Not More Recent?


The recency of the data for your ZIP code depends on the last your water source was tested, by a federal, state, or local agency. More information about the timing can be determined by learning about the dataset in question and seeing how often the EPA (other another governing body) mandated testing.