No open health-based violations on EPA record in the last 10 years.
Serves about 4,356 people (1,452 connections) with groundwater from its own wells, and buys water from Greenbriar Prairie Basse Water System and Town of Grand Coteau Water System.
From EPA's record for LA1097015. PurityMap is independent of Town of Sunset Water System.
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5 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From August 2019 | Groundwater Rule | – | – | Resolved |
| From August 2019 | Groundwater Rule | – | – | Resolved |
| From August 2019 | Groundwater Rule | – | – | Resolved |
| From August 2019 | Groundwater Rule | – | – | Resolved |
| From July 2018 | Lead and Copper Rule | – | TT | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2024 to June 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 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 | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| 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 | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| 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 | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| 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 | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| 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 | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| 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 | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-05 to 2025-06-03 | UCMR5 Analytical Results: TOWN OF SUNSET WATER SYSTEM (LA1097015) |
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 →Town of Sunset Water System's phone number on EPA record is 337-662-5296. Its mailing address is Town of Sunset Water System, 211 Marie Street, SUNSET, LA 70584.
According to EPA's record, Town of Sunset Water System uses groundwater from its own wells, and buys water from Greenbriar Prairie Basse Water System and Town of Grand Coteau Water System.
EPA's record shows 5 health-based violations for Town of Sunset Water System in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 6 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Town of Sunset Water System's latest lead and copper round, which ended in December 2025, was 0.38 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Town of Sunset Water System. Its phone number on EPA record is 337-662-5296. Its mailing address on EPA record is Town of Sunset Water System, 211 Marie Street, SUNSET, LA 70584. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.