Goforth Sud 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: TX1050019
Type: Community water system
EPA Region: 06
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 20,790 		Contact Information
SANDOVAL, DEBBIE
SANDOVAL, DEBBIE
8900 NIEDERWALD STRASSE
NIEDERWALD, TX 78640-4034

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   (3) 2014   (0) 2015   (0) 2016   (0) 2017   (0) 2018   (0)
molybdenum
strontium
chlorate

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).

molybdenum

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2014 2014-01-22 1 40 < 1
2014 2014-01-22 1 40 < 1
2013 2013-10-16 1 40 < 1
2013 2013-10-16 1 40 45.5
2013 2013-10-16 1 40 45.5
2013 2013-10-16 1 40 16.8
2013 2013-10-16 1 40 12.2
2013 2013-10-16 1 40 15.5
2013 2013-10-16 1 40 1.03
2013 2013-10-16 1 40 < 1
2013 2013-10-16 1 40 19.7
2013 2013-10-16 1 40 1.19
2013 2013-07-17 1 40 < 1
2013 2013-07-17 1 40 < 1
2013 2013-04-16 1 40 < 1
2013 2013-04-16 1 40 44.6
2013 2013-04-16 1 40 45.5
2013 2013-04-16 1 40 < 1
2013 2013-04-16 1 40 7.72
2013 2013-04-16 1 40 13
2013 2013-04-16 1 40 < 1
2013 2013-04-16 1 40 < 1
2013 2013-04-16 1 40 29.9
2013 2013-04-16 1 40 < 1

strontium

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2014 2014-01-22 0.3 1500 550
2014 2014-01-22 0.3 1500 565
2013 2013-10-16 0.3 1500 550
2013 2013-10-16 0.3 1500 59600
2013 2013-10-16 0.3 1500 62000
2013 2013-10-16 0.3 1500 18700
2013 2013-10-16 0.3 1500 14900
2013 2013-10-16 0.3 1500 17400
2013 2013-10-16 0.3 1500 540
2013 2013-10-16 0.3 1500 583
2013 2013-10-16 0.3 1500 22200
2013 2013-10-16 0.3 1500 2160
2013 2013-07-17 0.3 1500 567
2013 2013-07-17 0.3 1500 599
2013 2013-04-16 0.3 1500 503
2013 2013-04-16 0.3 1500 55100
2013 2013-04-16 0.3 1500 50900
2013 2013-04-16 0.3 1500 2570
2013 2013-04-16 0.3 1500 7220
2013 2013-04-16 0.3 1500 15800
2013 2013-04-16 0.3 1500 599
2013 2013-04-16 0.3 1500 600
2013 2013-04-16 0.3 1500 22500
2013 2013-04-16 0.3 1500 1390

chlorate

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2014 2014-01-22 20 210 < 20
2014 2014-01-22 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 20.4
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 < 20
2013 2013-10-16 20 210 344
2013 2013-07-17 20 210 < 20
2013 2013-07-17 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 477
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 < 20
2013 2013-04-16 20 210 483

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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
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.03 6.14 < 0.03
2013 2013-10-16 0.03 6.14 < 0.03
2013 2013-10-16 0.03 6.14 < 0.03
2013 2013-10-16 0.03 6.14 < 0.03
2013 2013-10-16 0.03 6.14 < 0.03
2013 2013-10-16 0.03 6.14 < 0.03
2013 2013-07-17 0.03 6.14 < 0.03
2013 2013-05-21 0.03 6.14 < 0.03
2013 2013-05-21 0.03 6.14 < 0.03
2013 2013-04-16 0.03 6.14 < 0.03
2013 2013-04-16 0.03 6.14 < 0.03
2013 2013-04-16 0.03 6.14 < 0.03
[+] Expand Test Data
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.03 0.0004 < 0.03
2013 2013-10-16 0.03 0.0004 < 0.03
2013 2013-10-16 0.03 0.0004 < 0.03
2013 2013-10-16 0.03 0.0004 < 0.03
2013 2013-10-16 0.03 0.0004 < 0.03
2013 2013-10-16 0.03 0.0004 < 0.03
2013 2013-07-17 0.03 0.0004 < 0.03
2013 2013-05-21 0.03 0.0004 < 0.03
2013 2013-05-21 0.03 0.0004 < 0.03
2013 2013-04-16 0.03 0.0004 < 0.03
2013 2013-04-16 0.03 0.0004 < 0.03
2013 2013-04-16 0.03 0.0004 < 0.03
[+] Expand Test Data
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.1 0.0103 < 0.1
2013 2013-10-16 0.1 0.0103 < 0.1
2013 2013-10-16 0.1 0.0103 < 0.1
2013 2013-10-16 0.1 0.0103 < 0.1
2013 2013-10-16 0.1 0.0103 < 0.1
2013 2013-10-16 0.1 0.0103 < 0.1
2013 2013-07-17 0.1 0.0103 < 0.1
2013 2013-05-21 0.1 0.0103 < 0.1
2013 2013-05-21 0.1 0.0103 < 0.1
2013 2013-04-16 0.1 0.0103 < 0.1
2013 2013-04-16 0.1 0.0103 < 0.1
2013 2013-04-16 0.1 0.0103 < 0.1
[+] Expand Test Data
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.07 0.35 < 0.07
2013 2013-10-16 0.07 0.35 < 0.07
2013 2013-10-16 0.07 0.35 < 0.07
2013 2013-10-16 0.07 0.35 < 0.07
2013 2013-10-16 0.07 0.35 < 0.07
2013 2013-10-16 0.07 0.35 < 0.07
2013 2013-07-17 0.07 0.35 < 0.07
2013 2013-04-16 0.07 0.35 < 0.07
2013 2013-04-16 0.07 0.35 < 0.07
2013 2013-04-16 0.07 0.35 < 0.07
2013 2013-04-16 0.07 0.35 < 0.07
2013 2013-04-16 0.07 0.35 < 0.07
[+] Expand Test Data
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.2 140 < 0.2
2013 2013-10-16 0.2 140 < 0.2
2013 2013-10-16 0.2 140 < 0.2
2013 2013-10-16 0.2 140 < 0.2
2013 2013-10-16 0.2 140 < 0.2
2013 2013-10-16 0.2 140 < 0.2
2013 2013-07-17 0.2 140 < 0.2
2013 2013-05-21 0.2 140 < 0.2
2013 2013-05-21 0.2 140 < 0.2
2013 2013-04-16 0.2 140 < 0.2
2013 2013-04-16 0.2 140 < 0.2
2013 2013-04-16 0.2 140 < 0.2
[+] Expand Test Data
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.2 2.69 < 0.2
2013 2013-10-16 0.2 2.69 < 0.2
2013 2013-10-16 0.2 2.69 < 0.2
2013 2013-10-16 0.2 2.69 < 0.2
2013 2013-10-16 0.2 2.69 < 0.2
2013 2013-10-16 0.2 2.69 < 0.2
2013 2013-07-17 0.2 2.69 < 0.2
2013 2013-05-21 0.2 2.69 < 0.2
2013 2013-05-21 0.2 2.69 < 0.2
2013 2013-04-16 0.2 2.69 < 0.2
2013 2013-04-16 0.2 2.69 < 0.2
2013 2013-04-16 0.2 2.69 < 0.2
[+] Expand Test Data
chromium 0.2 100 0.0865 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.2 100 < 0.2
2014 2014-01-22 0.2 100 < 0.2
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 0.644
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 < 0.2
2013 2013-10-16 0.2 100 0.222
2013 2013-10-16 0.2 100 < 0.2
2013 2013-07-17 0.2 100 < 0.2
2013 2013-07-17 0.2 100 0.301
2013 2013-04-16 0.2 100 < 0.2
2013 2013-04-16 0.2 100 < 0.2
2013 2013-04-16 0.2 100 < 0.2
2013 2013-04-16 0.2 100 0.24
2013 2013-04-16 0.2 100 < 0.2
2013 2013-04-16 0.2 100 0.2
2013 2013-04-16 0.2 100 0.23
2013 2013-04-16 0.2 100 < 0.2
2013 2013-04-16 0.2 100 < 0.2
2013 2013-04-16 0.2 100 0.24
[+] Expand Test Data
chromium-6 0.03 0 0.0447 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.03 0 0.0918
2014 2014-01-22 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 0.067
2013 2013-10-16 0.03 0 0.063
2013 2013-10-16 0.03 0 0.056
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 0.075
2013 2013-07-17 0.03 0 0.11
2013 2013-07-17 0.03 0 0.105
2013 2013-04-16 0.03 0 0.0624
2013 2013-04-16 0.03 0 < 0.03
2013 2013-04-16 0.03 0 0.0467
2013 2013-04-16 0.03 0 0.072
2013 2013-04-16 0.03 0 0.0486
2013 2013-04-16 0.03 0 0.0486
2013 2013-04-16 0.03 0 0.103
2013 2013-04-16 0.03 0 0.0684
2013 2013-04-16 0.03 0 < 0.03
2013 2013-04-16 0.03 0 0.055
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 1 70 < 1
2014 2014-01-22 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-10-16 1 70 < 1
2013 2013-07-17 1 70 < 1
2013 2013-07-17 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
2013 2013-04-16 1 70 < 1
[+] Expand Test Data
Halon 1011 0.06 90 0.1582 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.06 90 < 0.06
2013 2013-10-16 0.06 90 < 0.06
2013 2013-10-16 0.06 90 < 0.06
2013 2013-10-16 0.06 90 0.0755
2013 2013-10-16 0.06 90 0.997
2013 2013-10-16 0.06 90 0.179
2013 2013-07-17 0.06 90 0.0737
2013 2013-05-21 0.06 90 0.503
2013 2013-05-21 0.06 90 0.0704
2013 2013-04-16 0.06 90 < 0.06
2013 2013-04-16 0.06 90 < 0.06
2013 2013-04-16 0.06 90 < 0.06
[+] Expand Test Data
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.08 0 < 0.08
2013 2013-10-16 0.08 0 < 0.08
2013 2013-10-16 0.08 0 < 0.08
2013 2013-10-16 0.08 0 < 0.08
2013 2013-10-16 0.08 0 < 0.08
2013 2013-10-16 0.08 0 < 0.08
2013 2013-07-17 0.08 0 < 0.08
2013 2013-05-21 0.08 0 < 0.08
2013 2013-05-21 0.08 0 < 0.08
2013 2013-04-16 0.08 0 < 0.08
2013 2013-04-16 0.08 0 < 0.08
2013 2013-04-16 0.08 0 < 0.08
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.09 0 < 0.09
2013 2013-10-16 0.09 0 < 0.09
2013 2013-10-16 0.09 0 < 0.09
2013 2013-10-16 0.09 0 < 0.09
2013 2013-10-16 0.09 0 < 0.09
2013 2013-10-16 0.09 0 < 0.09
2013 2013-07-17 0.09 0 < 0.09
2013 2013-04-16 0.09 0 < 0.09
2013 2013-04-16 0.09 0 < 0.09
2013 2013-04-16 0.09 0 < 0.09
2013 2013-04-16 0.09 0 < 0.09
2013 2013-04-16 0.09 0 < 0.09
[+] Expand Test Data
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.01 0 < 0.01
2013 2013-10-16 0.01 0 < 0.01
2013 2013-10-16 0.01 0 < 0.01
2013 2013-10-16 0.01 0 < 0.01
2013 2013-10-16 0.01 0 < 0.01
2013 2013-10-16 0.01 0 < 0.01
2013 2013-07-17 0.01 0 < 0.01
2013 2013-04-16 0.01 0 < 0.01
2013 2013-04-16 0.01 0 < 0.01
2013 2013-04-16 0.01 0 < 0.01
2013 2013-04-16 0.01 0 < 0.01
2013 2013-04-16 0.01 0 < 0.01
[+] Expand Test Data
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-10-16 0.03 0 < 0.03
2013 2013-07-17 0.03 0 < 0.03
2013 2013-04-16 0.03 0 < 0.03
2013 2013-04-16 0.03 0 < 0.03
2013 2013-04-16 0.03 0 < 0.03
2013 2013-04-16 0.03 0 < 0.03
2013 2013-04-16 0.03 0 < 0.03
[+] Expand Test Data
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.02 0 < 0.02
2013 2013-10-16 0.02 0 < 0.02
2013 2013-10-16 0.02 0 < 0.02
2013 2013-10-16 0.02 0 < 0.02
2013 2013-10-16 0.02 0 < 0.02
2013 2013-10-16 0.02 0 < 0.02
2013 2013-07-17 0.02 0 < 0.02
2013 2013-04-16 0.02 0 < 0.02
2013 2013-04-16 0.02 0 < 0.02
2013 2013-04-16 0.02 0 < 0.02
2013 2013-04-16 0.02 0 < 0.02
2013 2013-04-16 0.02 0 < 0.02
[+] Expand Test Data
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.02 0.07 < 0.02
2013 2013-10-16 0.02 0.07 < 0.02
2013 2013-10-16 0.02 0.07 < 0.02
2013 2013-10-16 0.02 0.07 < 0.02
2013 2013-10-16 0.02 0.07 < 0.02
2013 2013-10-16 0.02 0.07 < 0.02
2013 2013-07-17 0.02 0.07 < 0.02
2013 2013-04-16 0.02 0.07 < 0.02
2013 2013-04-16 0.02 0.07 < 0.02
2013 2013-04-16 0.02 0.07 < 0.02
2013 2013-04-16 0.02 0.07 < 0.02
2013 2013-04-16 0.02 0.07 < 0.02
[+] Expand Test Data
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.04 0.07 < 0.04
2013 2013-10-16 0.04 0.07 < 0.04
2013 2013-10-16 0.04 0.07 < 0.04
2013 2013-10-16 0.04 0.07 < 0.04
2013 2013-10-16 0.04 0.07 < 0.04
2013 2013-10-16 0.04 0.07 < 0.04
2013 2013-07-17 0.04 0.07 < 0.04
2013 2013-04-16 0.04 0.07 < 0.04
2013 2013-04-16 0.04 0.07 < 0.04
2013 2013-04-16 0.04 0.07 < 0.04
2013 2013-04-16 0.04 0.07 < 0.04
2013 2013-04-16 0.04 0.07 < 0.04
[+] Expand Test Data
vanadium 0.2 21 1.6965 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-01-22 0.2 21 1.92
2014 2014-01-22 0.2 21 1.85
2013 2013-10-16 0.2 21 2.31
2013 2013-10-16 0.2 21 0.231
2013 2013-10-16 0.2 21 0.326
2013 2013-10-16 0.2 21 1.69
2013 2013-10-16 0.2 21 1.59
2013 2013-10-16 0.2 21 1.78
2013 2013-10-16 0.2 21 2.32
2013 2013-10-16 0.2 21 2.35
2013 2013-10-16 0.2 21 1.62
2013 2013-10-16 0.2 21 1.96
2013 2013-07-17 0.2 21 2.77
2013 2013-07-17 0.2 21 2.87
2013 2013-04-16 0.2 21 2.2
2013 2013-04-16 0.2 21 0.24
2013 2013-04-16 0.2 21 0.36
2013 2013-04-16 0.2 21 1.43
2013 2013-04-16 0.2 21 1.98
2013 2013-04-16 0.2 21 1.81
2013 2013-04-16 0.2 21 2.22
2013 2013-04-16 0.2 21 2.37
2013 2013-04-16 0.2 21 1.08
2013 2013-04-16 0.2 21 1.44
[+] Expand Test Data

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
TX103584 lead 2017-01-01 2017-12-31 0.002mg/L
TX101081 lead 2014-01-01 2016-12-31 0.002mg/L
TX81538 lead 2013-01-01 2013-12-31 0.00437mg/L
TX62410 lead 2008-01-01 2010-12-31 0.00108mg/L

Violations

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

Compliance Dates Rule Violation Type Contaminant Name Status
2014-10-01 - 2014-10-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2013-11-01 - 2013-11-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Returned to Compliance
2011-01-01 - 2011-12-31 Nitrates Monitoring, Regular Nitrate Returned to Compliance
2008-10-01 - 2008-12-31 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Chlorine Returned to Compliance
- N/A Inorganic Chemicals Maximum Contaminant Level Violation, Average Fluoride Known
- N/A Inorganic Chemicals Maximum Contaminant Level Violation, Average Fluoride Known
2014-10-01 - N/A Ground Water Rule Monitoring, Source Water (GWR) E. COLI Returned to Compliance
- N/A Lead and Copper Rule Initial Tap Sampling for Pb and Cu Lead and Copper Rule Returned to Compliance
2010-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
2016-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
2014-01-01 - N/A Public Notice Rule Public Notification Violation for NPDWR Violation Public Notice Returned to Compliance
2017-02-03 - 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.

Lab Location Zip Code
City of Austin Water Utility – Water Quality Laboratory Austin, TX 78728
Aqua Water Supply Corporation Bastrop, TX 78602
City of Harlingen Waterworks System Harlingen, TX 78550

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Goforth Sud (TX1050019).

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.