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Public water system record

St Mary Water & Sewer Comm #3

Serves an area of St. Mary Parish, LA that includes Centerville · 7,500 people served

Federal records show 3 health-based violations and 4 monitoring/reporting issues for St Mary Water & Sewer Comm #3 in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.

  • LA1101010
  • CENTERVILLE
  • LA
  • 7,500 served

System profile

Source water Surface water
ZIP 70522
EPA system ID LA1101010

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
4

Key facts

  • St Mary Water & Sewer Comm #3 draws water from 2 surface water intakes.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 66 µg/L, federal limit 60 µg/L (1.1 times the limit), 2017.
  • Record on file since 1993, with 5 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 1,997 service lines.

Check whether St Mary Water & Sewer Comm #3 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 Jan 1, 2025 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 66 µg/L, federal limit 60 µg/L (1.1 times the limit)
 220 Jul 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 80 µg/L (at or just above the limit)
 220 Jul 1, 2017 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Haloacetic Acids (HAA5)
Monitoring and reporting
 Oct 31, 2017 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Oct 31, 2017 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jul 31, 2017 Resolved
Chlorite
Monitoring and reporting
 Oct 1, 2016 Resolved

Full record since 1993

EPA's records for St Mary Water & Sewer Comm #3 go back to 1993. Before October 19, 2016 they list 5 health-based violations (1 resolved, 4 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 3 0
2000s 1 0
2010 to October 18, 2016 1 2
October 19, 2016 to 2019 2 3
2020s 1 0

Most recent health-based violation before October 19, 2016: Total Coliform, began August 2011, Archived.

Show all 5 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Aug 1, 2011 Archived
Total Coliform
Contaminant limit exceeded
 Apr 1, 2009 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Feb 1, 1994 Archived
Surface Water Treatment Rule
Treatment technique failure
 Jan 1, 1994 Archived
Surface Water Treatment Rule
Treatment technique failure
 Dec 1, 1993 Archived

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

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

St Mary Water & Sewer Comm #3 draws water from 2 surface water intakes. 1 other public water system has an emergency connection to St Mary Water & Sewer Comm #3.

Annual water quality report

St Mary Water & Sewer Comm #3 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