Haloacetic acids (HAA5) above the legal limit in the period starting January 2026.
Serves about 3,244 people (1,534 connections) with surface water from its own intake.
From EPA's record for MO2010479. PurityMap is independent of Louisiana PWS.
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17 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2026 | Haloacetic acids (HAA5) | 65 µg/L | 0.060 mg/L | Archived |
| Oct–Dec 2025 | Haloacetic acids (HAA5) | 67.3 µg/L | 0.060 mg/L | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 105 µg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2024 | Haloacetic acids (HAA5) | 61.3 µg/L | 0.060 mg/L | Resolved |
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 114 µg/L | 0.080 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jul–Sep 2024 | Haloacetic acids (HAA5) | 62 µg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2024 | Total trihalomethanes (TTHM) | 111 µg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 97 µg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 83 µg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2021 | Total trihalomethanes (TTHM) | 81 µg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2017 | Total trihalomethanes (TTHM) | 89.5 µg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2017 | Haloacetic acids (HAA5) | 65 µg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2017 | Total trihalomethanes (TTHM) | 96 µg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2017 | Haloacetic acids (HAA5) | 75 µg/L | 0.060 mg/L | Resolved |
| Apr–Jun 2017 | Total trihalomethanes (TTHM) | 93 µg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2017 | Haloacetic acids (HAA5) | 72 µg/L | 0.060 mg/L | Resolved |
| Jan–Mar 2017 | Total trihalomethanes (TTHM) | 87 µg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2025 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 | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 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 | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 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 | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 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 | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 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 | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 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 | 2025-03-26 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| 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 | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-06-23 | UCMR5 Analytical Results: LOUISIANA PWS (MO2010479) |
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Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
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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.
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Follow this water →Louisiana PWS's phone number on EPA record is 573-719-6053. Its mailing address is 202 S 3RD ST, LOUISIANA, MO 63353-0000.
According to EPA's record, Louisiana PWS uses surface water from its own intake.
EPA's record shows 17 health-based violations for Louisiana PWS in the 10 years to July 9, 2026. Haloacetic acids (HAA5) were above the legal limit in the period starting January 2026. EPA also lists 16 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Louisiana PWS's latest lead and copper round, which ended in December 2024, was 4.42 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Louisiana PWS. Its phone number on EPA record is 573-719-6053. Its mailing address on EPA record is 202 S 3RD ST, LOUISIANA, MO 63353-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.