No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2025.
Serves about 7,828 people (1,957 connections) with surface water from its own intake.
From EPA's record for LA1101010. PurityMap is independent of St Mary Water & Sewer Comm #3.
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3 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2025 | Haloacetic acids (HAA5) | 0.064 mg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2017 | Haloacetic acids (HAA5) | 66 µg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2017 | Total trihalomethanes (TTHM) | 83 µg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to December 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 11 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2024-02-06 to 2024-11-13 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorobutanoic acid (PFBA) | 5.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-13 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-13 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-13 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-11-13 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-12-16 | UCMR5 Analytical Results: ST MARY WATER & SEWER COMM #3 (LA1101010) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →St Mary Water & Sewer Comm #3's phone number on EPA record is 337-836-5609. Its mailing address is P.O. BOX 119, CENTERVILLE, LA 70522.
According to EPA's record, St Mary Water & Sewer Comm #3 uses surface water from its own intake.
EPA's record shows 3 health-based violations for St Mary Water & Sewer Comm #3 in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting January 2025. EPA also lists 4 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in St Mary Water & Sewer Comm #3's latest lead and copper round, which ended in December 2025, was 3.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for St Mary Water & Sewer Comm #3. Its phone number on EPA record is 337-836-5609. Its mailing address on EPA record is P.O. BOX 119, CENTERVILLE, LA 70522. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.