Home hazard report for 45401 — Dayton, OH
ZIP 45401 is served by Dayton Public Water System: no health-based violations since 2016, latest lead result 470 ppb, PFAS 10 ppt. Montgomery is in EPA radon zone 1.
No health-based violations reported since 2016.
The 90th-percentile lead level in the latest round (Jan 2024) was above EPA's 15 ppb action level, which requires the utility to take further steps.
Highest PFOA or PFOS result in EPA’s 2023–2025 testing was at or above 4.0 ppt, EPA’s 2024 maximum contaminant level for each. 5 PFAS compounds detected.
Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
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Where ZIP 45401 is
blue: utility service area · scroll or pinch to zoomDrinking water: Dayton Public Water System
Health-based violations
No health-based violations reported since 2016.
Full record for Dayton Public Water System →
Other systems overlapping this ZIP: Montgomery County Water Services 2 Pws.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFOS | 10 ppt | 4 of 8 | 4 ppt MCL |
| PFHxS | 9.8 ppt | 4 of 8 | — |
| PFPeA | 4.6 ppt | 4 of 8 | — |
| PFHxA | 4.4 ppt | 4 of 8 | — |
| PFBS | 3 ppt | 1 of 8 | — |
| PFOA | not detected | 0 of 8 | 4 ppt MCL |
| PFNA | not detected | 0 of 8 | — |
| PFHpA | not detected | 0 of 8 | — |
| HFPO-DA (GenX) | not detected | 0 of 8 | — |
| PFDA | not detected | 0 of 8 | — |
| PFBA | not detected | 0 of 8 | — |
EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.
Radon in Montgomery
EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| South Dayton Dump & Landfill Moraine, Ohio · EPA ID OHD980611388 | Proposed | 3.0 mi |
| Sanitary Landfill Co. (Industrial Waste Disposal Co., Inc.) Dayton, Ohio · EPA ID OHD093895787 | Active (final NPL) | 4.3 mi |
| Behr Dayton Thermal System VOC Plume Dayton, Ohio · EPA ID OHN000510164 | Active (final NPL) | 5.3 mi |
| North Sanitary Landfill Dayton, Ohio · EPA ID OHD980611875 | Active (final NPL) | 6.6 mi |
| Valley Pike VOCs Riverside, Ohio · EPA ID OHN000510489 | Active (final NPL) | 7.9 mi |
| Powell Road Landfill Dayton, Ohio · EPA ID OHD000382663 | Active (final NPL) | 8.1 mi |
| Mound Plant (USDOE) Miamisburg, Ohio · EPA ID OH6890008984 | Active (final NPL) | 8.6 mi |
| Lammers Barrel Beavercreek, Ohio · EPA ID OHD981537582 | Active (final NPL) | 9.9 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 45401
Who supplies drinking water to ZIP 45401?
Dayton Public Water System (EPA ID OH5703512), a surface water (rivers, lakes) system serving about 141,407 people.
Is there lead in Dayton, OH tap water?
The utility’s latest 90th-percentile lead result (Jan 2024) was 470 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Dayton, OH water have PFAS?
Highest PFOA or PFOS result in EPA’s 2023–2025 testing was at or above 4.0 ppt, EPA’s 2024 maximum contaminant level for each. 5 PFAS compounds detected.
Has the water system in 45401 had violations?
No health-based violations reported since 2016.
Are there Superfund sites near 45401?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: South Dayton Dump & Landfill (3.0 mi, Proposed); Sanitary Landfill Co. (Industrial Waste Disposal Co., Inc.) (4.3 mi, Active (final NPL)); Behr Dayton Thermal System VOC Plume (5.3 mi, Active (final NPL)).
Is radon a problem in Montgomery?
Montgomery is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.