1 open health-based violation on EPA record.
Serves about 5,793 people (2,009 connections) with surface water from its own intake.
From EPA's record for TX2140004. PurityMap is independent of Union WSC.
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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 2024 | Lead and copper rule revisions | – | – | Unaddressed |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 43.4 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorohexanoic acid (PFHxA) | 6.1 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorobutanoic acid (PFBA) | 7.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoropentanoic acid (PFPeA) | 6.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| 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 | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-10-22 | UCMR5 Analytical Results: UNION WSC (TX2140004) |
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.
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Follow this water →Union WSC's phone number on EPA record is 956-487-3744. Its mailing address is PO BOX 31, GARCIASVILLE, TX 78547-0031.
According to EPA's record, Union WSC uses surface water from its own intake.
EPA's record shows 1 health-based violation for Union WSC in the 10 years to July 9, 2026. EPA's record lists 1 open health-based violation. EPA also lists 8 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 Union WSC's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for Union WSC. Its phone number on EPA record is 956-487-3744. Its mailing address on EPA record is PO BOX 31, GARCIASVILLE, TX 78547-0031. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.