Water report · not indexed
What is in the water at 45409
3 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
MONTGOMERY COUNTY WATER SERVICES 1 PWS
PWSID OH5701315 · OH · serves 150,207 people
PFAS and lithium
5 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 11 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFHxS | 0.011 µg/L | 2 | 7/19/2023 |
| PFOS | 0.0096 µg/L | 2 | 7/19/2023 |
| PFPeA | 0.0052 µg/L | 2 | 7/19/2023 |
| PFHxA | 0.005 µg/L | 2 | 7/19/2023 |
| PFBS | 0.0032 µg/L | 3 | 7/19/2023 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 400 mg/L as CaCO₃, measured at 5 stations serving this system across 6 results, 2020-10-26 to 2023-09-26. Measured in the water source and distribution area, not at a tap, and not in your home.
OAKWOOD CITY PWS
PWSID OH5701915 · OH · serves 9,202 people · service area inferred by a model, not supplied by the state
PFAS and lithium
4 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 13 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFPeA | 0.0053 µg/L | 4 | 8/21/2024 |
| PFBS | 0.0053 µg/L | 4 | 8/21/2024 |
| PFHxA | 0.0038 µg/L | 2 | 2/12/2024 |
| PFHxS | 0.0035 µg/L | 3 | 8/21/2024 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
DAYTON PUBLIC WATER SYSTEM
PWSID OH5703512 · OH · serves 141,407 people
PFAS and lithium
5 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 17 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFOS | 0.01 µg/L | 4 | 9/6/2023 |
| PFHxS | 0.0098 µg/L | 4 | 9/6/2023 |
| PFPeA | 0.0046 µg/L | 4 | 9/6/2023 |
| PFHxA | 0.0044 µg/L | 4 | 9/6/2023 |
| PFBS | 0.003 µg/L | 1 | 9/6/2023 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 317 mg/L as CaCO₃, measured at 8 stations serving this system across 65 results, 2015-03-17 to 2024-12-04. Measured in the water source and distribution area, not at a tap, and not in your home.
What this report cannot tell you
Every figure describes water at a sampling point: a treatment plant, an entry point to the distribution system, or a monitoring station. None of it describes water arriving at your tap. Plumbing between the two can add lead and copper, and if your home was built before 1986 a test kit tells you something no federal dataset can.
Sources: EPA UCMR 5 occurrence (final release, frozen July 2026) · EPA SDWIS health-based violations · USGS and state monitoring via the Water Quality Portal · EPA Public Water System Service Area Boundaries v3. Compiled 2026-09-01 · 1 of 3 service areas here are modelled.