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Public water system record

Olmito WSC

Serves Brownsville, Los Fresnos and Olmito, Cameron County, TX · 8,952 people served

Federal records show 1 health-based violation and 5 monitoring/reporting issues for Olmito WSC in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • TX0310026
  • OLMITO
  • TX
  • 8,952 served

System profile

Source water Surface water
ZIP 78575
EPA system ID TX0310026

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
5

Key facts

  • Olmito WSC draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2022.
  • Most recent formal enforcement: compliance order with a penalty by Texas, January 2012.
  • Record on file since 2004, with 20 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 2,270 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 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jul 1, 2022 Resolved No

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, 2016 Resolved
Public Notice
OTHER
 Mar 1, 2011 Resolved
Public Notice
OTHER
 Feb 1, 2011 Resolved
Public Notice
OTHER
 Feb 1, 2011 Resolved
Public Notice
OTHER
 Jan 1, 2011 Resolved

Full record since 2004

EPA's records for Olmito WSC go back to 2004. Before October 19, 2016 they list 20 health-based violations (20 resolved) and 11 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 12 5
2010 to October 18, 2016 8 6
October 19, 2016 to 2019 0 1
2020s 1 0

Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began March 2011, Resolved.

Show all 20 health-based violations before October 19, 2016
Contaminant Start date Status
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Mar 1, 2011 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Feb 1, 2011 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Feb 1, 2011 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Jan 1, 2011 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Dec 1, 2010 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Dec 1, 2010 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Sep 1, 2010 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Aug 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jul 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jan 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jul 1, 2006 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.139 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 Apr 1, 2006 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.124 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 Jan 1, 2006 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Oct 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.125 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 Oct 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 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)
 Apr 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jan 1, 2004 Resolved

Enforcement actions

Texas regulators took 3 formal enforcement actions against Olmito WSC between 2004 and 2012. The most recent was a compliance order with a penalty in January 2012.

Date By Action Violations covered
Jan 11, 2012 Texas Compliance order with a penalty 14 violations (8 health-based): Interim Enhanced Surface Water Treatment Rule, Public Notice
Jan 8, 2005 Texas Compliance order with a penalty 10 violations (10 health-based): Total Trihalomethanes (TTHMs)
Jul 22, 2004 Texas Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Olmito WSC draws water from 1 surface water intake. 2 other public water systems have emergency connections to Olmito WSC.

Annual water quality report

Olmito 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