No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2020.
Serves about 7,413 people (2,471 connections) with surface water bought from City of Abilene.
From EPA's record for TX2210008. PurityMap is independent of Potosi WSC.
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5 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2020 | Total trihalomethanes (TTHM) | 0.086 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2019 | Total trihalomethanes (TTHM) | 0.091 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2019 | Total trihalomethanes (TTHM) | 0.092 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2019 | Total trihalomethanes (TTHM) | 0.094 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2019 | Total trihalomethanes (TTHM) | 0.081 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2025 to October 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 21 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorohexanesulfonic acid (PFHxS) | 19.9 ng/L | 10 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorooctanoic acid (PFOA) | 6.7 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Lithium | 15.1 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 | 2025-01-22 to 2025-10-22 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorobutanesulfonic acid (PFBS) | 6.1 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorohexanoic acid (PFHxA) | 15.7 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorobutanoic acid (PFBA) | 22 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoroheptanoic acid (PFHpA) | 8.7 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoropentanoic acid (PFPeA) | 13.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| 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 | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| 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 | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| 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 | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| 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 | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| 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 | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-23 | UCMR5 Analytical Results: POTOSI WSC (TX2210008) |
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 →Potosi WSC's phone number on EPA record is 325-529-3269. Its mailing address is 734 FM 1750, ABILENE, TX 79602-7712.
According to EPA's record, Potosi WSC uses surface water bought from City of Abilene.
EPA's record shows 5 health-based violations for Potosi WSC in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting January 2020. EPA also lists 7 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 Potosi WSC'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 Potosi WSC. Its phone number on EPA record is 325-529-3269. Its mailing address on EPA record is 734 FM 1750, ABILENE, TX 79602-7712. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.