Public Water System: City Of Mercedes

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: TX1080007
Type: Community water system
EPA Region: 06
Primary Service Area: Residential Area
Primary Source: Surface water
Population Served: 15,700
Contact Information
HINOJOSA, HENRY
HINOJOSA, HENRY
PO BOX 837
MERCEDES, TX 78570-0837

This public water system services 1 municipality in 1 county.

Summary Results


A summary view of the the times a water contaminant was tested and found to exceed the level set by the EPA (the MCL).

Maximum Contaminant Levels Exceeded (by year):

2013   (1) 2014   (1) 2015   (0) 2016   (0) 2017   (0) 2018   (0)
strontium strontium

Contaminant Detailed Results


This a view of violations of maximum contaminant levels. In the expanded view you can see each know test date for a given contaminant, the result of the test, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

strontium

Year Test Date MRL HRL Test Result
2014 2014-07-16 0.3 1500 1900
2014 2014-07-16 0.3 1500 2100
2014 2014-04-23 0.3 1500 1500
2014 2014-04-23 0.3 1500 1600
2014 2014-01-30 0.3 1500 2000
2014 2014-01-30 0.3 1500 1600
2013 2013-10-30 0.3 1500 1800
2013 2013-10-30 0.3 1500 2000

Other Water Contaminants Tested


The following contaminants were tested and within national EPA guidelines.

Contaminant MRL HRL Avg Result
chlorate 20 210 < 20 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 20 210 < 20
2014 2014-07-16 20 210 < 20
2014 2014-04-23 20 210 < 20
2014 2014-04-23 20 210 < 20
2014 2014-01-30 20 210 < 20
2014 2014-01-30 20 210 < 20
2013 2013-10-30 20 210 < 20
2013 2013-10-30 20 210 < 20
chromium 0.2 100 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.2 100 < 0.2
2014 2014-07-16 0.2 100 < 0.2
2014 2014-04-23 0.2 100 < 0.2
2014 2014-04-23 0.2 100 < 0.2
2014 2014-01-30 0.2 100 < 0.2
2014 2014-01-30 0.2 100 < 0.2
2013 2013-10-30 0.2 100 < 0.2
2013 2013-10-30 0.2 100 < 0.2
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 1 70 < 1
2014 2014-07-16 1 70 < 1
2014 2014-04-23 1 70 < 1
2014 2014-04-23 1 70 < 1
2014 2014-01-30 1 70 < 1
2014 2014-01-30 1 70 < 1
2013 2013-10-30 1 70 < 1
2013 2013-10-30 1 70 < 1
molybdenum 1 40 14.7 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 1 40 10
2014 2014-07-16 1 40 21
2014 2014-04-23 1 40 9.6
2014 2014-04-23 1 40 11
2014 2014-01-30 1 40 19
2014 2014-01-30 1 40 11
2013 2013-10-30 1 40 17
2013 2013-10-30 1 40 19
vanadium 0.2 21 3.7375 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.2 21 2.8
2014 2014-07-16 0.2 21 5
2014 2014-04-23 0.2 21 3.1
2014 2014-04-23 0.2 21 3.6
2014 2014-01-30 0.2 21 3.9
2014 2014-01-30 0.2 21 2.6
2013 2013-10-30 0.2 21 4.3
2013 2013-10-30 0.2 21 4.6
chromium-6 0.03 0 0.1043 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.03 0 0.16
2014 2014-07-16 0.03 0 0.11
2014 2014-04-23 0.03 0 0.08
2014 2014-04-23 0.03 0 0.09
2014 2014-01-30 0.03 0 0.11
2014 2014-01-30 0.03 0 0.07
2013 2013-11-20 0.03 0 0.11
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.03 6.14 < 0.03
2014 2014-04-23 0.03 6.14 < 0.03
2014 2014-01-30 0.03 6.14 < 0.03
2013 2013-10-30 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 2014-07-16 0.03 0.0004 < 0.03
2014 2014-04-23 0.03 0.0004 < 0.03
2014 2014-01-30 0.03 0.0004 < 0.03
2013 2013-10-30 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 2014-07-16 0.1 0.0103 < 0.1
2014 2014-04-23 0.1 0.0103 < 0.1
2014 2014-01-30 0.1 0.0103 < 0.1
2013 2013-10-30 0.1 0.0103 < 0.1
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.07 0.35 < 0.07
2014 2014-04-23 0.07 0.35 < 0.07
2014 2014-01-30 0.07 0.35 < 0.07
2013 2013-10-30 0.07 0.35 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.2 140 < 0.2
2014 2014-04-23 0.2 140 < 0.2
2014 2014-01-30 0.2 140 < 0.2
2013 2013-10-30 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.2 2.69 < 0.2
2014 2014-04-23 0.2 2.69 < 0.2
2014 2014-01-30 0.2 2.69 < 0.2
2013 2013-10-30 0.2 2.69 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.06 90 < 0.06
2014 2014-04-23 0.06 90 < 0.06
2014 2014-01-30 0.06 90 < 0.06
2013 2013-10-30 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.08 0 < 0.08
2014 2014-04-23 0.08 0 < 0.08
2014 2014-01-30 0.08 0 < 0.08
2013 2013-10-30 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.09 0 < 0.09
2014 2014-04-23 0.09 0 < 0.09
2014 2014-01-30 0.09 0 < 0.09
2013 2013-10-30 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.01 0 < 0.01
2014 2014-04-23 0.01 0 < 0.01
2014 2014-01-30 0.01 0 < 0.01
2013 2013-10-30 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.03 0 < 0.03
2014 2014-04-23 0.03 0 < 0.03
2014 2014-01-30 0.03 0 < 0.03
2013 2013-10-30 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.02 0 < 0.02
2014 2014-04-23 0.02 0 < 0.02
2014 2014-01-30 0.02 0 < 0.02
2013 2013-10-30 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.02 0.07 < 0.02
2014 2014-04-23 0.02 0.07 < 0.02
2014 2014-01-30 0.02 0.07 < 0.02
2013 2013-10-30 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-16 0.04 0.07 < 0.04
2014 2014-04-23 0.04 0.07 < 0.04
2014 2014-01-30 0.04 0.07 < 0.04
2013 2013-10-30 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. Lead and copper can be — and often are — added to drinking water in between the water facility and a tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
TX103124 lead 2015-01-01 2017-12-31 0.0045mg/L
TX85979 lead 2014-01-01 2014-12-31 0.0043mg/L
TX54348 lead 2008-01-01 2010-12-31 0.00511mg/L
TX75088 lead 2008-01-01 2010-12-31 0.00511mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2013-07-01 - 2013-09-30 Stage 2 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2013-04-01 - 2013-06-30 Stage 2 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2013-01-01 - 2013-03-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2012-10-01 - 2012-12-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2012-10-01 - 2012-12-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2012-10-01 - 2012-12-31 Stage 2 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2012-10-01 - 2012-10-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2012-08-01 - 2012-08-31 Long Term 1 Enhanced Surface Water Treatment Rule Single Turbidity Exceed (Enhanced SWTR) Interim Enhanced Surfsce Water Treatment Rule Returned to Compliance
2006-01-01 - 2011-12-31 Radionuclides Monitoring, Regular Gross Alpha, Excl. Radon and U Returned to Compliance
2006-01-01 - 2011-12-31 Radionuclides Monitoring, Regular Combined Uranium Returned to Compliance
2006-01-01 - 2011-12-31 Radionuclides Monitoring, Regular Combined Radium (-226 and -228) Returned to Compliance
2011-06-01 - 2011-06-30 Total Coliform Rule Monitoring, Repeat Minor (TCR) Coliform (TCR) Returned to Compliance
2010-09-01 - 2010-09-30 Total Coliform Rule Monitoring, Repeat Major (TCR) Coliform (TCR) Returned to Compliance
2009-10-01 - 2009-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2009-10-01 - 2009-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular 1,2,4-Trichlorobenzene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular cis-1,2-Dichloroethylene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Xylenes, Total Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular DICHLOROMETHANE Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular o-Dichlorobenzene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular p-Dichlorobenzene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Vinyl chloride Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular 1,1-Dichloroethylene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular trans-1,2-Dichloroethylene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloroethane Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular 1,1,1-Trichloroethane Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Carbon tetrachloride Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular 1,2-Dichloropropane Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Trichloroethylene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular 1,1,2-Trichloroethane Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Tetrachloroethylene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular CHLOROBENZENE Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Benzene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Toluene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Ethylbenzene Returned to Compliance
2009-07-01 - 2009-09-30 Volatile Organic Chemicals Monitoring, Regular Styrene Returned to Compliance
2009-07-01 - 2009-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) TTHM Returned to Compliance
2009-07-01 - 2009-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
2008-11-01 - 2008-11-30 Long Term 1 Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Interim Enhanced Surfsce Water Treatment Rule Returned to Compliance
2007-06-01 - 2007-06-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2004-07-01 - 2004-09-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Maximum Contaminant Level Violation, Average TTHM Returned to Compliance
2013-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
2014-10-01 - N/A Ground Water Rule Monitoring, Source Water (GWR) E. COLI Returned to Compliance
2013-07-13 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2011-01-10 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2016-05-31 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2011-04-15 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Open
2012-10-01 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2007-08-30 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2012-07-01 - N/A Ground Water Rule Monitoring, Source Water (GWR) E. COLI Open
2010-09-01 - N/A Ground Water Rule Monitoring, Source Water (GWR) E. COLI Returned to Compliance

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.