No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2024.
Serves about 5,097 people (2,423 connections) with surface water from its own intake, and buys water from Belmont Co. Sanitary District 3 PWS.
From EPA's record for OH0701516. PurityMap is independent of St. Clairsville, City of PWS.
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4 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From November 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From October 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| Jan–Mar 2024 | Haloacetic acids (HAA5) | 0.065 mg/L | 0.060 mg/L | Resolved |
| From February 2019 | Surface Water Treatment Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 6.4 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| 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 | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-31 to 2024-10-15 | UCMR5 Analytical Results: ST. CLAIRSVILLE, CITY OF PWS (OH0701516) |
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 →According to EPA's record, St. Clairsville, City of PWS uses surface water from its own intake, and buys water from Belmont Co. Sanitary District 3 PWS.
EPA's record shows 4 health-based violations for St. Clairsville, City of PWS 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 2024. EPA also lists 17 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. Clairsville, City of PWS's latest lead and copper round, which ended in June 2026. The federal action level is 15 µg/L.
PurityMap has no verified website for St. Clairsville, City of PWS. Its mailing address on EPA record is 100 North Market Street, P.O BOX 537, ST. CLAIRSVILLE, OH 43950. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.