Dayton, Ohio
City of Dayton Department of Water 2025 Water Quality Report. No hardness-as-CaCO3 number printed on the CCR table we opened. Chlorine 1.293 ppm (range 1.21–1.37). No Measure S-style residential softener ban turned up.
- Chlorine1.293 ppm (range 1.21–1.37)
- TTHMs28.83 ppb (range 17.9–41.5)
- HAA54.783 ppb (range 0.0–6.5)
Best match for Dayton
Whole-house carbon for chlorine
No district prohibition on a brine drain turned up in the current file.
That is chlorine. A whole-house carbon filter with an NSF/ANSI 42 chlorine claim is the usual match. A softener will not take chlorine out.
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Other options that still fit
Confirm hardness on the current CCR before buying
Open the current CCR for grains. This file does not invent a number from a ranking site. A salt softener needs a drain if it is legal at the address.
Shop salt-based softenersShop salt-free conditionersShop water test kits
Under-sink reverse osmosis
The under-sink RO we actually run is Cloud RO — NSF/ANSI 58, kitchen tap, not a whole-house tank. Check the exact listing if PFAS is why you are shopping. Shop Amazon first for under-sink RO, or buy Cloud direct. Waterdrop is a tankless option if you want that path. A certifier-listed pitcher is the cheap first step. Nobody is paying for a medical claim.
Shop under-sink reverse osmosisBuy Cloud RO directShop Waterdrop reverse osmosisShop PFAS-listed pitchers
Test the tap first
A homeowner kit is a start. It is not a state-certified lab. Use a certified lab when the decision is expensive.
On the report
- Water utility
- City of Dayton Department of Water
- Hardness
- The 2025 CCR table we opened did not print a hardness-as-CaCO3 number. Narrative says the plants use conventional lime softening. This file does not invent grains from that process note. — City of Dayton 2025 Water Quality Report
- Disinfectant
- Chlorine 1.293 ppm (range 1.21–1.37), MRDL 4 / MRDLG 4, 2025 distribution-system table. Narrative says the water is disinfected using chlorine. Free chlorine, not chloramine. — City of Dayton 2025 Water Quality Report
- Brine / salt to the sewer
- No district prohibition found in current research. Searched city water and sewer pages for a residential self-regenerating softener or brine-drain ban like LACSD Measure S. None turned up. Ask the sewer agency on the bill before you cut a brine drain.
Also around here
Extra context besides the utility report and the chart above — geology, an unregulated table, or a published study. Not a second set of printed tap numbers.
- MicroplasticsWHO’s 2019 review examined studies that found microplastic particles in treated tap and bottled water in many places. That is a published-occurrence finding, not a number from this city’s water-quality report, and we do not invent a particles-per-liter count for the tap.Microplastics in drinking-water — World Health Organization
- PFASEPA’s Fifth Unregulated Contaminant Monitoring Rule required community systems this size to test 29 PFAS and lithium in 2023–2025. Open the UCMR 5 Data Finder for this PWS. This file does not invent a detection.Fifth Unregulated Contaminant Monitoring Rule — U.S. Environmental Protection Agency
Dayton drinking water is City of Dayton Department of Water (Miami and Ottawa plants, Great Miami River Buried Valley Aquifer). No City of Dayton residential softener ban like LACSD Measure S turned up. Ask the sewer agency on the bill before you cut a brine drain. This is not a legal opinion.
The 2025 CCR table we opened does not print a hardness-as-CaCO3 number. Chlorine 1.293 ppm (1.21–1.37). TTHMs 28.83 ppb (17.9–41.5). HAA5 4.783 ppb (0.0–6.5). Kitchen shopping stays the Cloud RO / Waterdrop path already used on other cities if a listing is why you are looking.
Sources
- 2025 Water Quality Report — City of Dayton Department of Water. Accessed 2026-09-11.
Updated September 11, 2026. A city file is chemistry we can cite plus the sewer rule. No invented detections.