O Fallon 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: IL1631100
Type: Community water system
EPA Region: 05
Primary Service Area: Municipality
Primary Source: Surface water purchased
Population Served: 43,596
Contact Information
BELL, HEIDE
BELL, HEIDE
CITY HALL
255 SOUTH LINCOLN AVENUE
O'FALLON, IL 62269
HBELL@OFALLON.ORG

This public water system services 1 municipality in 1 county.

Summary Results


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

Maximum Contaminant Levels Exceeded (by year):

2013   (1) 2014   (2) 2015   (0) 2016   (0) 2017   (0) 2018   (0)
1,4-dioxane chlorate
1,4-dioxane

Contaminant Detailed Results


This a view of violations of maximum contaminant levels. Use the expanded view see result data for a drinking water contaminant, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

chlorate

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2014 2014-09-08 20 210 250
2014 2014-09-08 20 210 25
2014 2014-06-05 20 210 120
2014 2014-06-05 20 210 < 20
2014 2014-03-11 20 210 29
2014 2014-03-11 20 210 23
2013 2013-12-11 20 210 < 20
2013 2013-12-11 20 210 < 20

1,4-dioxane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2014 2014-09-08 0.07 0.35 < 0.07
2014 2014-06-05 0.07 0.35 0.17
2014 2014-03-11 0.07 0.35 0.4
2013 2013-12-11 0.07 0.35 0.48

Other Water Contaminants Tested


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

Contaminant MRLMinimum Reporting Level HRLHealth Risk Limit Avg Result
chromium 0.2 100 0.2125 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.2 100 0.4
2014 2014-09-08 0.2 100 0.2
2014 2014-06-05 0.2 100 < 0.2
2014 2014-06-05 0.2 100 < 0.2
2014 2014-03-11 0.2 100 < 0.2
2014 2014-03-11 0.2 100 0.3
2013 2013-12-11 0.2 100 0.6
2013 2013-12-11 0.2 100 0.2
chromium-6 0.03 0 0.0725 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.03 0 0.17
2014 2014-09-08 0.03 0 0.11
2014 2014-06-05 0.03 0 0.04
2014 2014-06-05 0.03 0 0.05
2014 2014-03-11 0.03 0 0.05
2014 2014-03-11 0.03 0 0.04
2013 2013-12-11 0.03 0 0.06
2013 2013-12-11 0.03 0 0.06
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 1 70 < 1
2014 2014-09-08 1 70 < 1
2014 2014-06-05 1 70 < 1
2014 2014-06-05 1 70 < 1
2014 2014-03-11 1 70 < 1
2014 2014-03-11 1 70 < 1
2013 2013-12-11 1 70 < 1
2013 2013-12-11 1 70 < 1
molybdenum 1 40 1.8625 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 1 40 2.3
2014 2014-09-08 1 40 2.3
2014 2014-06-05 1 40 1.8
2014 2014-06-05 1 40 1.7
2014 2014-03-11 1 40 1.6
2014 2014-03-11 1 40 1.6
2013 2013-12-11 1 40 1.8
2013 2013-12-11 1 40 1.8
strontium 0.3 1500 121.9375 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.3 1500 130
2014 2014-09-08 0.3 1500 130
2014 2014-06-05 0.3 1500 121.2
2014 2014-06-05 0.3 1500 113.1
2014 2014-03-11 0.3 1500 108.6
2014 2014-03-11 0.3 1500 108.4
2013 2013-12-11 0.3 1500 131.6
2013 2013-12-11 0.3 1500 132.6
vanadium 0.2 21 1.6875 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.2 21 3.1
2014 2014-09-08 0.2 21 3.1
2014 2014-06-05 0.2 21 1.7
2014 2014-06-05 0.2 21 1.8
2014 2014-03-11 0.2 21 0.8
2014 2014-03-11 0.2 21 0.9
2013 2013-12-11 0.2 21 1.2
2013 2013-12-11 0.2 21 0.9
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.03 6.14 < 0.03
2014 2014-06-05 0.03 6.14 < 0.03
2014 2014-03-11 0.03 6.14 < 0.03
2013 2013-12-11 0.03 6.14 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.03 0.0004 < 0.03
2014 2014-06-05 0.03 0.0004 < 0.03
2014 2014-03-11 0.03 0.0004 < 0.03
2013 2013-12-11 0.03 0.0004 < 0.03
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.1 0.0103 < 0.1
2014 2014-06-05 0.1 0.0103 < 0.1
2014 2014-03-11 0.1 0.0103 < 0.1
2013 2013-12-11 0.1 0.0103 < 0.1
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.2 140 < 0.2
2014 2014-06-05 0.2 140 < 0.2
2014 2014-03-11 0.2 140 < 0.2
2013 2013-12-11 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.2 2.69 < 0.2
2014 2014-06-05 0.2 2.69 < 0.2
2014 2014-03-11 0.2 2.69 < 0.2
2013 2013-12-11 0.2 2.69 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.06 90 < 0.06
2014 2014-06-05 0.06 90 < 0.06
2014 2014-03-11 0.06 90 < 0.06
2013 2013-12-11 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.08 0 < 0.08
2014 2014-06-05 0.08 0 < 0.08
2014 2014-03-11 0.08 0 < 0.08
2013 2013-12-11 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.09 0 < 0.09
2014 2014-06-05 0.09 0 < 0.09
2014 2014-03-11 0.09 0 < 0.09
2013 2013-12-11 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.01 0 < 0.01
2014 2014-06-05 0.01 0 < 0.01
2014 2014-03-11 0.01 0 < 0.01
2013 2013-12-11 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.03 0 < 0.03
2014 2014-06-05 0.03 0 < 0.03
2014 2014-03-11 0.03 0 < 0.03
2013 2013-12-11 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.02 0 < 0.02
2014 2014-06-05 0.02 0 < 0.02
2014 2014-03-11 0.02 0 < 0.02
2013 2013-12-11 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.02 0.07 < 0.02
2014 2014-06-05 0.02 0.07 < 0.02
2014 2014-03-11 0.02 0.07 < 0.02
2013 2013-12-11 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-08 0.04 0.07 < 0.04
2014 2014-06-05 0.04 0.07 < 0.04
2014 2014-03-11 0.04 0.07 < 0.04
2013 2013-12-11 0.04 0.07 < 0.04

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
IL46729 lead 2015-01-01 2017-12-31 0.001mg/L
IL42684 lead 2012-01-01 2014-12-31 0.001mg/L
IL37412 lead 2009-01-01 2011-12-31 0.002mg/L
IL33997 lead 2006-01-01 2008-12-31 0.001mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2007-01-01 - 2007-06-30 Lead and Copper Rule Water Quality Parameter M/R Lead and Copper Rule Returned to Compliance
- N/A Lead and Copper Rule Water Quality Parameter M/R Lead and Copper Rule Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Acute (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Acute (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Known
- N/A Lead and Copper Rule OCCT/SOWT Study/Recommendation Lead and Copper Rule Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Acute (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Lead and Copper Rule OCCT/SOWT Study/Recommendation Lead and Copper Rule Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Monitoring, Routine Minor (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Known
- N/A Lead and Copper Rule Initial Tap Sampling for Pb and Cu Lead and Copper Rule Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Known
- N/A Lead and Copper Rule Water Quality Parameter M/R Lead and Copper Rule Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Known

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.

Lab Location Zip Code
Teklab, Incorporated Collinsville, IL 62234
American Bottoms Regional Wastewater Treatment Facility Sauget, IL 62201
American Water Central Laboratory Belleville, IL 62220

Water Service Information


Convenient information about your water service.

Unable to identify any billing information about O Fallon (IL1631100).

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.