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Public water system record

Coryell City Water Supply District

Serves an area of Coryell County, TX that includes Mound · 6,042 people served

Federal records show 1 health-based violation and 15 monitoring/reporting issues for Coryell City Water Supply District in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.

  • TX0500013
  • GATESVILLE
  • TX
  • 6,042 served

System profile

Source water Purchased surface water
ZIP 76528
EPA system ID TX0500013

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
15

Key facts

  • Coryell City Water Supply District draws water from 3 wells.
  • Most recent formal enforcement: compliance order (no penalty) by EPA, March 2021.
  • Record on file since 1983, with 16 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 1,974 unknown out of 1,984 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Revised Total Coliform Rule
Treatment technique failure
 110 Dec 21, 2018 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2025 Active
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 2025 Active
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2024 Active
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2023 Active
E. coli
Monitoring and reporting
 Nov 18, 2020 Resolved
E. coli
Monitoring and reporting
 Apr 29, 2020 Resolved
Public Notice
OTHER
 Oct 4, 2019 Resolved
Public Notice
OTHER
 Apr 7, 2019 Resolved
Public Notice
OTHER
 Mar 17, 2019 Active
Public Notice
OTHER
 Mar 1, 2019 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2018 Resolved
E. coli
Monitoring and reporting
 Sep 1, 2017 Resolved
Public Notice
OTHER
 Jan 23, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2016 Resolved

Full record since 1983

EPA's records for Coryell City Water Supply District go back to 1983. Before October 19, 2016 they list 16 health-based violations (13 resolved, 3 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 2 0
1990s 1 1
2000s 7 2
2010 to October 18, 2016 6 3
October 19, 2016 to 2019 1 9
2020s 0 6

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began July 2016, Resolved.

Show all 16 health-based violations before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Jul 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Apr 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jan 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Oct 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jan 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2007 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
 Jul 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.144 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
 Jul 1, 2007 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Apr 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.111 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Apr 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Feb 1, 1991 Archived
Fluoride
Contaminant limit exceeded
 Mar 28, 1983 Archived
Fluoride
Contaminant limit exceeded
 Mar 28, 1983 Archived

Enforcement actions

Texas regulators and EPA took 2 formal enforcement actions against Coryell City Water Supply District between 2017 and 2021. The most recent was a compliance order (no penalty) in March 2021.

Date By Action Violations covered
Mar 31, 2021 EPA Compliance order (no penalty) 1 violation (1 health-based): Revised Total Coliform Rule
Jul 27, 2017 Texas Compliance order with a penalty 6 violations (6 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)

What the violations mean

Revised Total Coliform Rule

1 incident

The system did not meet a requirement of the Revised Total Coliform Rule

Coliform and E. coli rules protect against bacteria in the distribution system

Where the water comes from

Coryell City Water Supply District draws water from 3 wells. It also buys water from City of Gatesville.

Buys water from

Annual water quality report

Coryell City Water Supply District 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.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

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