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Public water system record

Zephyr WSC

Serves an area of Brown County, TX that includes Zephyr and Thunderbird Bay · 7,575 people served

Federal records show 3 health-based violations and 3 monitoring/reporting issues for Zephyr WSC in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • TX0250019
  • ZEPHYR
  • TX
  • 7,575 served

System profile

Source water Purchased surface water
ZIP 76890
EPA system ID TX0250019

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Zephyr WSC buys its water from Brown County Wid 1.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2017.
  • Most recent formal enforcement: compliance order (no penalty) by Texas, December 2015.
  • Record on file since 2010, with 6 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 2,502 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 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Apr 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2016 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Jan 28, 2025 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2023 Resolved

Full record since 2010

EPA's records for Zephyr WSC go back to 2010. Before October 19, 2016 they list 6 health-based violations (1 resolved, 5 archived by EPA without a recorded fix) and 3 monitoring or reporting violations.

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

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

Show all 6 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jul 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Apr 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Jan 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Oct 1, 2014 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2014 Archived

Enforcement actions

Texas regulators took 1 formal enforcement action against Zephyr WSC in 2015. The most recent was a compliance order (no penalty) in December 2015.

Date By Action Violations covered
Dec 17, 2015 Texas Compliance order (no penalty) 8 violations (8 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

3 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Zephyr WSC buys its water from Brown County Wid 1. It lists no wells or intakes of its own. 1 other public water system has an emergency connection to Zephyr WSC.

Buys water from

Annual water quality report

Zephyr 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