Dayton, OH tap water: what’s in it in 2026
Reviewed by Joe Letorney, 30-year water treatment expert · Former WQA Certified Water Treatment Specialist (CWS), Level VI
See best water filters for lead removal and what filters remove PFAS.
Serving 135K residents via Greater Dayton Water · Dayton, OH drinking water is supplied by Greater Dayton Water. EPA and public water system monitoring commonly focus on issues such as PFAS from Wright-Patterson AFB, Industrial legacy, Great Miami Aquifer risk. Capital programs rotate through main replacements, corrosion-control adjustments, and treatment pilots (carbon, UV, membranes) while suburbs keep adding demand at the edges of the system. Pair this context with your address-specific EPA panel to see which upgrades line up with what was sampled most recently.
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Dayton water currently shows no major violations in EPA monitoring data. That said, your home's internal plumbing can add lead or other contaminants after water leaves the treatment plant — especially in homes built before 1986.
Wright-Patterson Air Force Base is one of the largest PFAS contamination sites in the US.
PFAS from Wright-Patterson has impacted the Great Miami Aquifer -- Dayton's primary water source.
Dayton is often cited as a national example of military PFAS contaminating a city's drinking water.
RO filtration is essential for Dayton residents -- the PFAS contamination is well documented and severe.
The EPA's 5th Unregulated Contaminant Monitoring Rule (UCMR5) required systems serving 3,300+ people to test for 29 PFAS compounds between 2023–2025. This system either was not required to test, reported no detections, or has not yet submitted results to the federal database.
Source: EPA UCMR5 national dataset · Data current as of 2026
Daytonutility data is a strong baseline — but lead often comes from your home's pipes, and PFAS can vary by neighborhood. Choose certified lab testing for certainty, or skip straight to NSF-certified filters matched to this profile.
SimpleLab Tap Score mail-in panels test PFAS, lead, nitrates, bacteria, and 100+ contaminants at your kitchen tap. Results in about a week — then pick filtration with real numbers, not guesses.
Tap Score City Test — from $89 →Accredited labs · Best if you have old plumbing, pregnancy, or want proof before installing RO
Get NSF 58 / NSF 53 picks matched to Dayton's PFAS, lead, and disinfection byproduct profile — reviewed by a 30-year water treatment expert.
Take the 3-question filter quiz →Best when contaminants are already flagged above and you want the right RO or pitcher today
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COMMON QUESTIONS
Is Dayton tap water safe to drink in 2026?
Dayton water meets EPA legal standards, but meeting legal standards is not the same as being free of health concerns. EPA limits are set based on treatment feasibility, not always on what independent scientists consider safe. Dayton has pfas from wright-patterson afb which is a significant concern — certified filtration is strongly recommended.
Does Dayton water have PFAS?
EPA UCMR5 monitoring data for Dayton (water system OH5700722) is shown above. PFAS — sometimes called "forever chemicals" — are synthetic compounds that don't break down in the body. Only reverse osmosis systems or NSF 58-certified carbon block filters reliably remove PFAS from tap water. Standard pitcher filters do not remove PFAS.
Does Dayton water have lead?
Lead in tap water almost always comes from the pipes inside your home or building, not the treatment plant. Homes built before 1986 in Dayton are most at risk because they may have lead solder, brass fittings, or lead service lines. The EPA has no safe level for lead in children. An NSF/ANSI 53-certified filter or reverse osmosis system removes lead at the tap.
What water filter is best for Dayton?
For Dayton's water profile — pfas from wright-patterson afb, industrial legacy — a reverse osmosis system addresses the widest range of contaminants. Under-sink RO (Waterdrop G3P600, Aquasana SmartFlow) is the gold standard for homeowners. Renters can use a countertop RO like the Waterdrop K19-S Countertop RO — zero installation required. Clearly Filtered pitchers are the best non-RO option for PFAS and lead.
How do I get my Dayton water tested?
For the most accurate results for your specific tap, use a certified mail-in lab test rather than relying on city-wide data. SimpleLab Tap Score tests for 100+ contaminants including PFAS, lead, arsenic, and nitrates. Results come with a detailed health assessment and filter recommendations. City-wide EPA data like what you see above is a strong baseline, but your home's plumbing can add contaminants after the water leaves the treatment plant.
As of October 2024, all US public water systems must publish a public inventory of their lead service lines — the pipes connecting the water main to your home. Even if your public water system water tests clean at the treatment plant, lead can leach from these pipes into your tap. Homes built before 1986 are most at risk.
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City-wide data is just the start. Enter your ZIP to see your exact water system's EPA report, PFAS levels, and violation history — then get the right filter for your home.
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Reviewed by Joe Letorney, 30-year water treatment expert · Former WQA Certified Water Treatment Specialist (CWS), Level VI