Total trihalomethanes (TTHM) above the legal limit in the period starting January 2026.
Serves about 6,540 people (2,414 connections) with groundwater bought from Muskingum County Water.
From EPA's record for OH6001411. PurityMap is independent of Maysville Regional Water.
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31 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.129 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.117 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.099 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.081 mg/L | 0.080 mg/L | Archived |
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 0.086 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2024 | Total trihalomethanes (TTHM) | 0.102 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2023 | Total trihalomethanes (TTHM) | 0.114 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2023 | Total trihalomethanes (TTHM) | 0.126 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2023 | Total trihalomethanes (TTHM) | 0.129 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2023 | Total trihalomethanes (TTHM) | 0.126 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2022 | Total trihalomethanes (TTHM) | 0.12 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2022 | Total trihalomethanes (TTHM) | 0.116 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2022 | Total trihalomethanes (TTHM) | 0.126 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.119 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 0.113 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2021 | Total trihalomethanes (TTHM) | 0.103 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2020 | Total trihalomethanes (TTHM) | 0.0899 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2020 | Total trihalomethanes (TTHM) | 0.0853 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2019 | Total trihalomethanes (TTHM) | 0.08788 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2019 | Total trihalomethanes (TTHM) | 0.088 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2019 | Total trihalomethanes (TTHM) | 0.095 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2018 | Total trihalomethanes (TTHM) | 0.097 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2018 | Total trihalomethanes (TTHM) | 0.101 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2018 | Total trihalomethanes (TTHM) | 0.111 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2023 to November 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 4 ng/L | 4.0 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| 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 | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-21 to 2023-11-20 | UCMR5 Analytical Results: MAYSVILLE REGIONAL WATER (OH6001411) |
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 →Maysville Regional Water's phone number on EPA record is 740-849-2428. Its mailing address is MAYSVILLE REGIONAL WATER DISTRICT, P.O. BOX 95, WHITE COTTAGE, OH 43791-0095.
According to EPA's record, Maysville Regional Water uses groundwater bought from Muskingum County Water.
EPA's record shows 31 health-based violations for Maysville Regional Water in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting January 2026. EPA also lists 12 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 Maysville Regional Water'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 Maysville Regional Water. Its phone number on EPA record is 740-849-2428. Its mailing address on EPA record is MAYSVILLE REGIONAL WATER DISTRICT, P.O. BOX 95, WHITE COTTAGE, OH 43791-0095. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.