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Public water system record

West Sterlington Water System

On record as serving Union Parish, LA · Serves 1,095 people

Federal records show 30 health-based violations and 3 monitoring/reporting issues for West Sterlington Water System in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • LA1111017
  • STERLINGTON
  • LA
  • 1,095 served

System profile

Source water Groundwater
ZIP 71280
EPA system ID LA1111017

Verify this system on EPA ECHO →

Health-based violations, last 10 years
30
Resolved
1
Unresolved
0
Archived by EPA
29
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • West Sterlington Water System draws water from 2 wells.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.287 mg/L, federal limit 0.08 mg/L (3.6 times the limit), 2024.
  • Most recent formal enforcement: compliance order (no penalty) by Louisiana, July 2020.
  • Record on file since 1999, with 6 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 385 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 0.278 mg/L, federal limit 0.08 mg/L (3.5 times the limit)
 220 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.267 mg/L, federal limit 0.08 mg/L (3.3 times the limit)
 220 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.264 mg/L, federal limit 0.08 mg/L (3.3 times the limit)
 220 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.272 mg/L, federal limit 0.08 mg/L (3.4 times the limit)
 220 Jan 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.27 mg/L, federal limit 0.08 mg/L (3.4 times the limit)
 220 Oct 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.279 mg/L, federal limit 0.08 mg/L (3.5 times the limit)
 220 Jul 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.287 mg/L, federal limit 0.08 mg/L (3.6 times the limit)
 220 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.258 mg/L, federal limit 0.08 mg/L (3.2 times the limit)
 220 Jan 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.256 mg/L, federal limit 0.08 mg/L (3.2 times the limit)
 220 Oct 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.246 mg/L, federal limit 0.08 mg/L (3.1 times the limit)
 220 Jul 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.216 mg/L, federal limit 0.08 mg/L (2.7 times the limit)
 220 Apr 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.226 mg/L, federal limit 0.08 mg/L (2.8 times the limit)
 220 Jan 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.222 mg/L, federal limit 0.08 mg/L (2.8 times the limit)
 220 Oct 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.217 mg/L, federal limit 0.08 mg/L (2.7 times the limit)
 220 Jul 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.227 mg/L, federal limit 0.08 mg/L (2.8 times the limit)
 220 Apr 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.252 mg/L, federal limit 0.08 mg/L (3.2 times the limit)
 220 Jan 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.255 mg/L, federal limit 0.08 mg/L (3.2 times the limit)
 220 Oct 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Groundwater Rule
Treatment technique failure
 140 Oct 1, 2021 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.26 mg/L, federal limit 0.08 mg/L (3.3 times the limit)
 220 Jul 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.255 mg/L, federal limit 0.08 mg/L (3.2 times the limit)
 220 Apr 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.239 mg/L, federal limit 0.08 mg/L (3 times the limit)
 220 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.239 mg/L, federal limit 0.08 mg/L (3 times the limit)
 220 Oct 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.239 mg/L, federal limit 0.08 mg/L (3 times the limit)
 220 Jul 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.24 mg/L, federal limit 0.08 mg/L (3 times the limit)
 220 Apr 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.222 mg/L, federal limit 0.08 mg/L (2.8 times the limit)
 220 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.201 mg/L, federal limit 0.08 mg/L (2.5 times the limit)
 220 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.192 mg/L, federal limit 0.08 mg/L (2.4 times the limit)
 220 Jul 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.171 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 220 Apr 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 155 µg/L, federal limit 80 µg/L (1.9 times the limit)
 220 Jan 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 172 µg/L, federal limit 80 µg/L (2.2 times the limit)
 220 Oct 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 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 Resolved
Public Notice
OTHER
 Jun 15, 2024 Resolved
Public Notice
OTHER
 Sep 10, 2019 Resolved

Full record since 1999

EPA's records for West Sterlington Water System go back to 1999. Before October 19, 2016 they list 6 health-based violations (3 resolved, 3 archived by EPA without a recorded fix) and 4 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2000s 6 2
2010 to October 18, 2016 0 1
October 19, 2016 to 2019 5 1
2020s 25 2

Most recent health-based violation before October 19, 2016: Total Coliform, began March 2009, Resolved.

Show all 6 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Mar 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 145 µg/L, federal limit 80 µg/L (1.8 times the limit)
 Oct 1, 2006 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 200 µg/L, federal limit 80 µg/L (2.5 times the limit)
 Jul 1, 2006 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 187 µg/L, federal limit 80 µg/L (2.3 times the limit)
 Apr 1, 2006 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 140 µg/L, federal limit 80 µg/L (1.8 times the limit)
 Jan 1, 2006 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 90 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Oct 1, 2005 Resolved

Enforcement actions

Louisiana regulators took 1 formal enforcement action against West Sterlington Water System in 2020. The most recent was a compliance order (no penalty) in July 2020.

Date By Action Violations covered
Jul 20, 2020 Louisiana Compliance order (no penalty) 29 violations (28 health-based): Total Trihalomethanes (TTHMs), Public Notice

What the violations mean

Total Trihalomethanes (TTHMs)

29 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Groundwater Rule

1 incident

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

West Sterlington Water System draws water from 2 wells.

Annual water quality report

West Sterlington Water System 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 Louisiana.

Certified drinking water labs by state EPA guidance for private wells