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Public water system record

Potosi WSC

Serves an area of Taylor County and Callahan County, TX that includes Potosi and Abilene · 7,413 people served

Federal records show 6 health-based violations and 7 monitoring/reporting issues for Potosi WSC in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • TX2210008
  • ABILENE
  • TX
  • 7,413 served

System profile

Source water Purchased surface water
ZIP 79602
EPA system ID TX2210008

Verify this system on EPA ECHO →

Health-based violations, last 10 years
6
Resolved
6
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
7

Key facts

  • Potosi WSC buys its water from City of Abilene.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit), 2019.
  • Most recent formal enforcement: compliance order with a penalty by Texas, April 2020.
  • Record on file since 2013, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 2,560 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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jan 1, 2020 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Jul 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Apr 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2019 Resolved No
Lead and Copper Rule
Treatment technique failure
 350 Dec 1, 2013 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Consumer Confidence Rule
OTHER
 Jul 1, 2023 Resolved
Public Notice
OTHER
 Jan 7, 2023 Resolved
Chlorine
Monitoring and reporting
 Jul 1, 2021 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jun 5, 2020 Resolved
Public Notice
OTHER
 Jan 21, 2020 Resolved
Public Notice
OTHER
 Dec 26, 2019 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2019 Resolved

Full record since 2013

EPA's records for Potosi WSC go back to 2013. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 8 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 3 8
October 19, 2016 to 2019 4 2
2020s 1 5

Most recent health-based violation before October 19, 2016: Total Coliform, began November 2015, Resolved.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Nov 1, 2015 Resolved
Lead and Copper Rule
Treatment technique failure
 Apr 1, 2014 Resolved
Lead and Copper Rule
Treatment technique failure
 Dec 1, 2013 Resolved

Enforcement actions

Texas regulators took 1 formal enforcement action against Potosi WSC in 2020. The most recent was a compliance order with a penalty in April 2020.

Date By Action Violations covered
Apr 28, 2020 Texas Compliance order with a penalty 6 violations (5 health-based): Total Trihalomethanes (TTHMs), Chlorine

What the violations mean

Total Trihalomethanes (TTHMs)

5 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Lead and Copper Rule

1 incident

The system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Potosi WSC buys its water from City of Abilene. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Potosi WSC 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