Overland Park, Kansas
WaterOne 2025 Water Quality Report (2024 data). Hardness 144 ppm (range 119–172). Chloramines 3.1 ppm (range 2.1–3.7). No Measure S-style residential softener ban turned up.
- Hardness144 ppm (range 119–172)
- Chloramines3.1 ppm (range 2.1–3.7)
- TTHMs41 ppb (range 2.2–85.8)
- HAA517 ppb (range 2.9–36.6)
Best match for Overland Park
Salt-based water softener
No district prohibition on a brine drain turned up in the current file.
A salt-based softener is the thing that actually removes hardness. Size it from your grains and how much water you use, not bathroom count. It needs a drain.
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Other options that still fit
Salt-free conditioner
A salt-free conditioner changes how scale sticks. It does not soften. Soap and spots stay closer to untreated. No brine line.
Whole-house catalytic carbon for chloramine
Catalytic carbon with a chloramine claim (NSF/ANSI 42 for chloramine). Regular chlorine carbon is the wrong box.
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
- WaterOne (Water District No. 1 of Johnson County)
- Hardness
- Hardness, Total 144 ppm as CaCO3 (range 119–172). Calcium hardness 88 ppm (61–120). WaterOne 2025 Water Quality Report, 2024 data. — WaterOne 2025 Water Quality Report
- Disinfectant
- Chloramines 3.1 ppm (range 2.1–3.7), MRDL 4. Narrative says chloramines are added before distribution. Not free chlorine only. — WaterOne 2025 Water Quality Report
- Brine / salt to the sewer
- No district prohibition found in current research. Searched WaterOne and Johnson County 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
Overland Park drinking water on this file is WaterOne. No WaterOne 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 report (2024 data) prints total hardness 144 ppm (119–172). Chloramines 3.1 ppm (2.1–3.7). TTHMs 41 ppb (2.2–85.8). HAA5 17 ppb (2.9–36.6). 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 — WaterOne. Accessed 2026-09-10.
Updated September 10, 2026. A city file is chemistry we can cite plus the sewer rule. No invented detections.