No open health-based violations on EPA record in the last 10 years.
Serves about 7,965 people (2,655 connections) with groundwater from its own wells.
From EPA's record for TX0010031. PurityMap is independent of TDCJ Coffield Unit.
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2 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| From August 2023 | E. coli | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2025 to July 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 | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 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 | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 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 | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 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 | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 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 | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 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 | 2025-02-03 to 2025-07-07 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-28 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-28 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| 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 | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-28 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-28 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-07-29 | UCMR5 Analytical Results: TDCJ COFFIELD UNIT (TX0010031) |
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 →TDCJ Coffield Unit's phone number on EPA record is 936-437-7247. Its mailing address is PO BOX 4011, HUNTSVILLE, TX 77342-4011.
According to EPA's record, TDCJ Coffield Unit uses groundwater from its own wells.
EPA's record shows 2 health-based violations for TDCJ Coffield Unit in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 9 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in TDCJ Coffield Unit's latest lead and copper round, which ended in December 2025, was 6.69 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for TDCJ Coffield Unit. Its phone number on EPA record is 936-437-7247. Its mailing address on EPA record is PO BOX 4011, HUNTSVILLE, TX 77342-4011. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.