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Public water system record

City of La Marque

Serves La Marque, Galveston County, TX · 15,154 people served

Federal records show no health-based violations and 5 monitoring/reporting issues for City of La Marque in the last ten years. At least one of these issues remains unresolved.

  • TX0840006
  • LA MARQUE
  • TX
  • 15,154 served

System profile

Source water Purchased surface water
ZIP 77568
EPA system ID TX0840006

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
5

Key facts

  • City of La Marque buys its water from Gulf Coast Water Authority TX City.
  • Record on file since 1984, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 1 lead and 5,992 unknown out of 9,594 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.

None since October 2016.

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
 Dec 30, 2025 Active
Chlorine
Monitoring and reporting
 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Consumer Confidence Rule
OTHER
 Jul 1, 2025 Active
Public Notice
OTHER
 Oct 1, 2023 Active
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2022 Resolved

Full record since 1984

EPA's records for City of La Marque go back to 1984. Before October 19, 2016 they list 3 health-based violations (3 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 3 0
2000s 0 2
2010 to October 18, 2016 0 4
2020s 0 5

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 1988, Archived.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
 Apr 1, 1988 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
 Sep 23, 1985 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
 Dec 31, 1984 Archived

Where the water comes from

City of La Marque buys its water from Gulf Coast Water Authority TX City. EPA also lists 3 wells, all for emergency, seasonal or other part-time use.

Buys water from

Annual water quality report

City of La Marque 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

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