No health-based violations on EPA record since 2016.
Serves about 39,508 people (17,717 connections) with surface water bought from Greater Cincinnati Water Works, Clermont Public Water System, Warren County and 2 more.
From EPA's record for OH8300512. PurityMap is independent of Western Water Company.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2023 to June 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 14.1 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| 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 | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-07 to 2024-06-12 | UCMR5 Analytical Results: WESTERN WATER COMPANY (OH8300512) |
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, Western Water Company uses surface water bought from Greater Cincinnati Water Works, Clermont Public Water System, Warren County and 2 more.
No health-based violations on EPA record since 2016. 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 Western Water Company's latest lead and copper round, which ended in December 2025, was 1.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Western Water Company. Its mailing address on EPA record is 3639 BENNETT RD, MORROW, OH 45152. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.