3 open health-based violations on EPA record.
Serves about 7,263 people (2,421 connections) with groundwater from its own wells, and buys water from St Martin Industrial Park Water System.
From EPA's record for LA1099007. PurityMap is independent of City of St Martinville Water System.
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7 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From November 2025 | Groundwater Rule | – | – | Resolved |
| From November 2025 | Groundwater Rule | – | – | Unaddressed |
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| From November 2023 | Groundwater Rule | – | – | Unaddressed |
| From November 2023 | Groundwater Rule | – | – | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From February 2023 | Groundwater Rule | – | – | Unaddressed |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 0.082 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2025 to August 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 31.5 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| 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 | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-08-05 | UCMR5 Analytical Results: CITY OF ST MARTINVILLE WATER SYSTEM (LA1099007) |
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 →City of St Martinville Water System's phone number on EPA record is 337-394-2230. Its mailing address is CITY OF ST. MARTINVILLE WATER SYSTEM, P.O. BOX 379, ST. MARTINVILLE, LA 70582.
According to EPA's record, City of St Martinville Water System uses groundwater from its own wells, and buys water from St Martin Industrial Park Water System.
EPA's record shows 7 health-based violations for City of St Martinville Water System in the 10 years to July 9, 2026. EPA's record lists 3 open health-based violations. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in City of St Martinville Water System's latest lead and copper round, which ended in December 2023, was 2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for City of St Martinville Water System. Its phone number on EPA record is 337-394-2230. Its mailing address on EPA record is CITY OF ST. MARTINVILLE WATER SYSTEM, P.O. BOX 379, ST. MARTINVILLE, LA 70582. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.