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Public water system record

Union WSC

Serves an area of Starr County, TX that includes El Refugio, La Puerta, Chaparrito and 14 more places · 5,793 people served

Federal records show 1 health-based violation and 8 monitoring/reporting issues for Union WSC in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • TX2140004
  • GARCIASVILLE
  • TX
  • 5,793 served

System profile

Source water Surface water
ZIP 78547
EPA system ID TX2140004

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
0
Unresolved
1
Any acute record
No
Monitoring issues, last 10 years
8

Key facts

  • Union WSC draws water from 2 surface water intakes.
  • Most recent formal enforcement: compliance order with a penalty by Texas, October 2005.
  • Record on file since 1992, with 8 health-based violations before October 19, 2016.

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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
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Active 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, 2025 Active
Public Notice
OTHER
 May 1, 2025 Active
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Active
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2016 Resolved
Public Notice
OTHER
 Nov 10, 2014 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2013 Resolved
Public Notice
OTHER
 Apr 1, 2013 Resolved

Full record since 1992

EPA's records for Union WSC go back to 1992. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 9 monitoring or reporting violations.

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

Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began April 2013, Resolved.

Show all 8 health-based violations before October 19, 2016
Contaminant Start date Status
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Apr 1, 2013 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Jan 1, 2005 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Dec 1, 2004 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.06 mg/L (1.4 times the limit)
 Oct 1, 2004 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
 Jul 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.12 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Jul 1, 2004 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Apr 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.116 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Apr 1, 2004 Resolved

Enforcement actions

Texas regulators took 1 formal enforcement action against Union WSC in 2005. The most recent was a compliance order with a penalty in October 2005.

Date By Action Violations covered
Oct 24, 2005 Texas Compliance order with a penalty 5 violations (5 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)

What the violations mean

LEAD AND COPPER RULE REVISIONS

1 incident

The 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

Union WSC draws water from 2 surface water intakes.

Annual water quality report

Union 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