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Public water system record

St Mary Parish Water Sewerage Comm 1

Serves Amelia and Bayou L'Ourse, St. Mary Parish and Assumption Parish, LA · 2,823 people served

Federal records show 3 health-based violations and 6 monitoring/reporting issues for St Mary Parish Water Sewerage Comm 1 in the last ten years. The most serious issue in this window was a Haloacetic Acids (HAA5) violation that EPA lists as archived, not resolved.

  • LA1101009
  • AMELIA
  • LA
  • 2,823 served

System profile

Source water Surface water
ZIP 70340
EPA system ID LA1101009

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
1
Unresolved
0
Archived by EPA
2
Any acute record
No
Monitoring issues, last 10 years
6

Key facts

  • St Mary Parish Water Sewerage Comm 1 draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit), 2025.
  • Record on file since 2008, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 876 unknown out of 953 service lines.

Check whether St Mary Parish Water Sewerage Comm 1 serves your address

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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
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 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
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 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
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Resolved 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, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
 Nov 18, 2023 Active
Consumer Confidence Rule
OTHER
 Jul 1, 2021 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jan 30, 2021 Active
Consumer Confidence Rule
OTHER
 Jul 1, 2020 Active
Consumer Confidence Rule
OTHER
 Jul 1, 2019 Resolved

Full record since 2008

EPA's records for St Mary Parish Water Sewerage Comm 1 go back to 2008. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 8 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 0 1
2010 to October 18, 2016 1 7
October 19, 2016 to 2019 0 1
2020s 3 5

Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began April 2014, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Apr 1, 2014 Resolved

What the violations mean

Haloacetic Acids (HAA5)

2 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

St Mary Parish Water Sewerage Comm 1 draws water from 1 surface water intake. It also buys water from Morgan City Water System.

Buys water from

Annual water quality report

St Mary Parish Water Sewerage Comm 1 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