No open health-based violations on EPA record in the last 10 years.
Serves about 6,915 people (2,305 connections) with groundwater from its own wells.
From EPA's record for LA1019119. PurityMap is independent of Houston River Waterworks District 11.
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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 October 2023 | Groundwater Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from June 2024 to December 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 16 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| 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 | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-10 to 2024-12-09 | UCMR5 Analytical Results: HOUSTON RIVER WATERWORKS DISTRICT 11 (LA1019119) |
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 →Houston River Waterworks District 11's phone number on EPA record is 337-528-3446. Its mailing address is HOUSTON RIVER WATER WORKS # 11, P.O. BOX 2119, SULPHUR, LA 70664.
According to EPA's record, Houston River Waterworks District 11 uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Houston River Waterworks District 11 in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Houston River Waterworks District 11'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 Houston River Waterworks District 11. Its phone number on EPA record is 337-528-3446. Its mailing address on EPA record is HOUSTON RIVER WATER WORKS # 11, P.O. BOX 2119, SULPHUR, LA 70664. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.