Hays Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
groundwater
pH Level
7.4
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
1265 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Hays, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Hays | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Hays compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Hays, Kansas | ≈ 120–179 mg/L | 31.7 ppt | 🟠 Hard | groundwater |
| Great Bend, Kansas | ≈ 180+ mg/L | 704.2 ppt | 🔴 Very Hard | groundwater |
| Dodge City, Kansas | ≈ 180+ mg/L | 3.7 ppt | 🔴 Very Hard | groundwater |
| Hutchinson, Kansas | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
| Salina, Kansas | ≈ 120–179 mg/L | 75 ppt | 🟠 Hard | reservoir |
National Benchmark
How Hays compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Hays | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
Bring Scarsdale-quality water to your Hays home
Shop water softeners on Amazon.com →
What Makes Hays's Water Unique?
Local geology and source profile
The City of Hays Water System serves Hays, Kansas (Ellis County) and surrounding areas from a primary water treatment plant located at 1000 Vine Street, Hays, KS 67601. The utility draws its supply from the High Plains Aquifer, a major groundwater resource underlying the Great Plains. The system is operated by the City of Hays and can be reached at 785-628-7380 for customer inquiries. The utility publishes an annual Consumer Confidence Report — most recently updated April 2025 — detailing all detected contaminants and compliance status to ensure transparency for residents.
Hays' water supply originates from Cretaceous-age sandstone and siltstone formations within the High Plains Aquifer. The geological setting of western Kansas exposes groundwater to calcium and magnesium-bearing mineral deposits, which dissolve into the water as it percolates through these rock layers. This hydrogeological context produces a hard water supply typical of the region, shaped by the carbonate-rich geology of the High Plains.
At hard water levels, Hays residents experience typical scale buildup in kettles, coffee makers, and water heaters, as well as reduced soap lather and potential film on dishes and skin. Dishwashers and washing machines may require more frequent maintenance and higher detergent doses. Many households in the area benefit from point-of-use or whole-home water softening systems to mitigate these effects and extend appliance lifespan. The City of Hays reports zero EPA violations since 2023, with lead levels well below the action level at 0.0015 mg/L, and all federal drinking water standards are met.
Geology & Source: High Plains Aquifer — Cretaceous-age sandstones and siltstones in western Kansas; calcium and magnesium-bearing mineral formations dissolve into percolating groundwater, producing hard water characteristic of carbonate-rich High Plains geology
Other Kansas Water Reports
Report an Issue
Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.
All reports are reviewed by our team. Thank you for supporting data quality!
Frequently Asked Questions
Is Hays's water safe to drink?
Do I need a water softener in Hays?
How does Hays compare to the USA average?
Data Sources & Methodology
Water quality data for Hays is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.