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Public water system record

Port of West St Mary

Serves an area of St. Mary Parish, LA · 400 people served

Federal records show 9 health-based violations and 7 monitoring/reporting issues for Port of West St Mary 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.

  • LA1101013
  • FRANKLIN
  • LA
  • 400 served

System profile

Source water Groundwater
ZIP 70538
EPA system ID LA1101013

Verify this system on EPA ECHO →

Health-based violations, last 10 years
9
Resolved
8
Unresolved
0
Archived by EPA
1
Any acute record
No
Monitoring issues, last 10 years
7

Key facts

  • Port of West St Mary draws water from 1 well.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 115 µg/L, federal limit 80 µg/L (1.4 times the limit), 2016.
  • Most recent formal enforcement: compliance order (no penalty) by Louisiana, June 2016.
  • Record on file since 2005, with 8 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 27 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 0.084 mg/L, federal limit 0.08 mg/L (1.1 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 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Oct 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 220 Jul 1, 2019 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 Apr 1, 2019 Resolved No
Lead and Copper Rule
Treatment technique failure
 350 Jan 11, 2019 Resolved No
Lead and Copper Rule
Treatment technique failure
 350 Jul 11, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
 220 Apr 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 115 µg/L, federal limit 80 µg/L (1.4 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
Groundwater Rule
OTHER
 Dec 1, 2021 Active
Consumer Confidence Rule
OTHER
 Oct 1, 2017 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jul 31, 2016 Resolved
Public Notice
OTHER
 Mar 19, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 May 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 31, 2015 Resolved

Full record since 2005

EPA's records for Port of West St Mary go back to 2005. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 10 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 1 4
2010 to October 18, 2016 7 6
October 19, 2016 to 2019 7 1
2020s 1 1

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

Show all 8 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 115 µg/L, federal limit 80 µg/L (1.4 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 128 µg/L, federal limit 80 µg/L (1.6 times the limit)
 Jul 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 123 µg/L, federal limit 80 µg/L (1.5 times the limit)
 Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 113 µg/L, federal limit 80 µg/L (1.4 times the limit)
 Jan 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 109 µg/L, federal limit 80 µg/L (1.4 times the limit)
 Oct 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 102 µg/L, federal limit 80 µg/L (1.3 times the limit)
 Jul 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 123 µg/L, federal limit 80 µg/L (1.5 times the limit)
 Apr 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 80 µg/L (at or just above the limit)
 Jan 1, 2005 Resolved

Enforcement actions

Louisiana regulators took 1 formal enforcement action against Port of West St Mary in 2016. The most recent was a compliance order (no penalty) in June 2016.

Date By Action Violations covered
Jun 24, 2016 Louisiana Compliance order (no penalty) 16 violations (13 health-based): Total Trihalomethanes (TTHMs), Public Notice

What the violations mean

Total Trihalomethanes (TTHMs)

7 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Lead and Copper Rule

2 incidents

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

The utility had to notify customers about each of these violations.

Where the water comes from

Port of West St Mary draws water from 1 well.

Annual water quality report

Port of West St Mary 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Port of West St Mary for a copy.

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