No open health-based violations on EPA record in the last 10 years.
Serves about 8,037 people (2,679 connections) with groundwater from its own wells, and buys water from Utilities Inc.
From EPA's record for LA1103053. PurityMap is independent of St Tam Parish.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From August 2021 | Groundwater Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2024 to July 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 12.3 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 | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | 8.2 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 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 | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 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 | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 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 | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 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 | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| 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 | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-10 to 2024-07-08 | UCMR5 Analytical Results: ST TAM PARISH - CROSS GATES SD (LA1103053) |
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 Tam Parish's phone number on EPA record is 985-893-1717. Its mailing address is Department of Utilities, 620 N Tyler Street, COVINGTON, LA 70433.
According to EPA's record, St Tam Parish uses groundwater from its own wells, and buys water from Utilities Inc.
EPA's record shows 1 health-based violation for St Tam Parish in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 4 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in St Tam Parish's latest lead and copper round, which ended in December 2024. The federal action level is 15 µg/L.
PurityMap has no verified website for St Tam Parish. Its phone number on EPA record is 985-893-1717. Its mailing address on EPA record is Department of Utilities, 620 N Tyler Street, COVINGTON, LA 70433. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.