No open health-based violations on EPA record in the last 10 years.
Serves about 4,334 people (1,806 connections) with groundwater from its own wells.
From EPA's record for OH5600812. PurityMap is independent of Monroe Water Systems.
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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 | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: MONROE WATER SYSTEMS (OH5600812) |
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 →Monroe Water Systems's phone number on EPA record is 740-865-2416. Its mailing address is 43022 SIX POINTS ROAD, LAINGS, OH 43752.
According to EPA's record, Monroe Water Systems uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Monroe Water Systems in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 4 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Monroe Water Systems's latest lead and copper round, which ended in December 2025, was 1.8 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Monroe Water Systems. Its phone number on EPA record is 740-865-2416. Its mailing address on EPA record is 43022 SIX POINTS ROAD, LAINGS, OH 43752. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.