Public water system record
Green Hills Subdivision
Serves an area of Cass County, TX · 55 people served
Federal records show 1 health-based violation and 221 monitoring/reporting issues for Green Hills Subdivision in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Groundwater
ZIP
75563
EPA system ID
TX0340019
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 221
Key facts
- Green Hills Subdivision draws water from 3 wells.
- Most recent formal enforcement: compliance order with a penalty by Texas, October 2021.
- Record on file since 1999, with 2 health-based violations before October 19, 2016.
Check whether Green Hills Subdivision serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Resolved |
|
Public Notice
OTHER
|
May 1, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 22, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2021 | Resolved |
|
Public Notice
OTHER
|
Feb 25, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Nov 16, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2020 | Resolved |
|
Public Notice
OTHER
|
Sep 19, 2020 | Resolved |
|
Public Notice
OTHER
|
Sep 17, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Aldicarb
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Aldicarb sulfone
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Aldicarb sulfoxide
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Sep 11, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Jun 12, 2019 | Resolved |
|
Public Notice
OTHER
|
Feb 9, 2019 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Jul 29, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Jun 5, 2017 | Resolved |
|
Public Notice
OTHER
|
May 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Mar 13, 2017 | Resolved |
|
Public Notice
OTHER
|
Jan 16, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb sulfone
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb sulfoxide
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Dec 14, 2016 | Resolved |
|
Public Notice
OTHER
|
Dec 14, 2016 | Resolved |
|
Public Notice
OTHER
|
Oct 13, 2016 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Public Notice
OTHER
|
Jul 11, 2016 | Resolved |
|
Public Notice
OTHER
|
Jul 11, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2016 | Resolved |
|
Public Notice
OTHER
|
Apr 20, 2016 | Resolved |
|
Public Notice
OTHER
|
Apr 11, 2016 | Resolved |
|
Public Notice
OTHER
|
Mar 11, 2016 | Resolved |
|
Public Notice
OTHER
|
Feb 10, 2016 | Resolved |
|
Public Notice
OTHER
|
Jan 8, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 1, 2015 | Resolved |
|
Public Notice
OTHER
|
Sep 25, 2015 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2015 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2015 | Resolved |
|
Public Notice
OTHER
|
Jan 22, 2015 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2014 | Resolved |
|
Public Notice
OTHER
|
Aug 19, 2014 | Resolved |
|
Public Notice
OTHER
|
Aug 19, 2014 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2014 | Resolved |
|
Public Notice
OTHER
|
Feb 13, 2014 | Resolved |
|
Public Notice
OTHER
|
Feb 13, 2014 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2013 | Resolved |
|
Public Notice
OTHER
|
Apr 10, 2013 | Resolved |
|
Public Notice
OTHER
|
Feb 10, 2013 | Resolved |
|
Public Notice
OTHER
|
Jan 10, 2013 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
|
Public Notice
OTHER
|
Dec 11, 2012 | Resolved |
|
Public Notice
OTHER
|
Sep 1, 2012 | Resolved |
|
E. coli
Monitoring and reporting
|
Sep 1, 2012 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2012 | Resolved |
|
Public Notice
OTHER
|
Nov 15, 2011 | Resolved |
|
Public Notice
OTHER
|
Nov 15, 2011 | Resolved |
|
Public Notice
OTHER
|
Aug 10, 2011 | Resolved |
|
Public Notice
OTHER
|
Mar 1, 2011 | Resolved |
|
E. coli
Monitoring and reporting
|
Mar 1, 2011 | Resolved |
|
Public Notice
OTHER
|
Feb 10, 2011 | Resolved |
|
Public Notice
OTHER
|
Sep 10, 2010 | Resolved |
|
Public Notice
OTHER
|
Jun 29, 2010 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2010 | Active |
|
Public Notice
OTHER
|
Jul 25, 2008 | Resolved |
|
Public Notice
OTHER
|
Jul 10, 2008 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
May 11, 2008 |
Active
Enforcement action in place
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2001 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2001 | Active |
Full record since 1999
EPA's records for Green Hills Subdivision go back to 1999. Before October 19, 2016 they list 2 health-based violations (1 resolved, 1 archived by EPA without a recorded fix) and 346 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 1 | 161 |
| 2010 to October 18, 2016 | 1 | 184 |
| October 19, 2016 to 2019 | 0 | 84 |
| 2020s | 1 | 89 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2012, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2007 | Archived |
Enforcement actions
Texas regulators and EPA took 7 formal enforcement actions against Green Hills Subdivision between 2000 and 2021. The most recent was a compliance order with a penalty in October 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 27, 2021 | Texas | Compliance order with a penalty | 71 violations: E. coli, Lead and Copper Rule, Chlorine, Thallium, Total, Picloram |
| May 13, 2019 | Texas | Compliance order with a penalty | 18 violations: Public Notice, Lead and Copper Rule |
| Jan 28, 2016 | Texas | Compliance order with a penalty | 21 violations: Public Notice, Lead and Copper Rule |
| Dec 19, 2013 | Texas | Compliance order with a penalty | 112 violations (1 health-based): cis-1,2-Dichloroethylene, o-Dichlorobenzene, p-Dichlorobenzene, 1,1,1-Trichloroethane, 1,2-Dichloropropane |
| Sep 23, 2009 | Texas | Compliance order with a penalty | 11 violations (1 health-based): Total Coliform, Public Notice |
| Jul 8, 2008 | Texas | Compliance order with a penalty | 1 violation: Total Coliform |
| May 3, 2000 | EPA | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Green Hills Subdivision draws water from 3 wells.
Annual water quality report
Green Hills Subdivision must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Green Hills Subdivision for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Texas.
Certified drinking water labs by state EPA guidance for private wells