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Public water system record

City of Los Fresnos

Serves Los Fresnos and Brownsville, Cameron County, TX · 6,009 people served

Federal records show 1 health-based violation and 6 monitoring/reporting issues for City of Los Fresnos in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.

  • TX0310004
  • LOS FRESNOS
  • TX
  • 6,009 served

System profile

Source water Surface water
ZIP 78566
EPA system ID TX0310004

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
6

Key facts

  • City of Los Fresnos draws water from 1 surface water intake.
  • Most recent formal enforcement: compliance order with a penalty by Texas, May 2017.
  • Record on file since 2003, with 15 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 1,082 unknown out of 2,678 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
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Oct 1, 2016 Resolved Yes

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Oct 1, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2016 Resolved
Public Notice
OTHER
 Sep 7, 2016 Resolved
Public Notice
OTHER
 Aug 31, 2016 Resolved
Public Notice
OTHER
 Aug 27, 2016 Resolved
Public Notice
OTHER
 Jul 31, 2016 Resolved

Full record since 2003

EPA's records for City of Los Fresnos go back to 2003. Before October 19, 2016 they list 15 health-based violations (15 resolved) and 50 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 8 2
2010 to October 18, 2016 7 48

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

Show all 15 health-based violations before October 19, 2016
Contaminant Start date Status
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Oct 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Sep 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Aug 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Aug 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Jul 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Jul 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Jun 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.113 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jan 1, 2005 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Oct 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.195 mg/L, federal limit 0.08 mg/L (2.4 times the limit)
 Oct 1, 2004 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Jul 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.189 mg/L, federal limit 0.08 mg/L (2.4 times the limit)
 Jul 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.183 mg/L, federal limit 0.08 mg/L (2.3 times the limit)
 Apr 1, 2004 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 Apr 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jan 1, 2004 Resolved

Enforcement actions

Texas regulators took 3 formal enforcement actions against City of Los Fresnos between 2005 and 2017, filed as 4 records in EPA's data. The most recent was a compliance order with a penalty in May 2017.

Date By Action Violations covered
May 4, 2017 Texas Compliance order with a penalty 40 violations: Interim Enhanced Surface Water Treatment Rule, Public Notice
Mar 21, 2017 Texas Compliance order with a penalty 10 violations (7 health-based): Interim Enhanced Surface Water Treatment Rule, Public Notice
Feb 23, 2005 Texas Compliance order with a penalty 7 violations (7 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)

What the violations mean

Interim Enhanced Surface Water Treatment Rule

1 incident

The system did not meet a filtration or treatment requirement for surface water

Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through

Where the water comes from

City of Los Fresnos draws water from 1 surface water intake. It also buys water from Southmost Regional Water Authority. 1 other public water system has an emergency connection to City of Los Fresnos.

Buys water from

Annual water quality report

City of Los Fresnos 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