Gardner Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
1294.3 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 Gardner, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Gardner | 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 Gardner compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Gardner, Kansas | ≈ 120–179 mg/L | 6.8 ppt | 🟠 Hard | reservoir |
| Olathe, Kansas | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Lenexa, Kansas | ≈ 120–179 mg/L | 5.2 ppt | 🟠 Hard | groundwater |
| Overland Park, Kansas | ≈ 120–179 mg/L | 5.1 ppt | 🟠 Hard | river |
| Shawnee, Kansas | ≈ 180+ mg/L | 4.8 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Gardner compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Gardner | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Gardner's Water Unique?
Local geology and source profile
Gardner, Kansas is served by the Gardner, City of utility, located at 1150 E Santa Fe St, Gardner, KS 66030, in Johnson County within the Kansas City metropolitan area. Water is sourced from municipal groundwater wells tapping Permian aquifers beneath the community. No specific treatment plant names are detailed in available reports, but standard wellhead treatment is applied before distribution to approximately 25,000 residents in this growing suburban area southeast of Kansas City. There is no traditional surface watershed, as the supply is entirely groundwater-fed from bedrock formations in eastern Kansas.
The supply draws from the Wellington Formation and Chase Group aquifers in the Permian bedrock of eastern Kansas. These limestone and dolomite formations, part of the Central Kansas Uplift structural province, underlie glacial till and loess soils. The geology imparts a hard character through natural dissolution of carbonate minerals — calcite and dolomite — along with minor sulfate influences from associated evaporites. Gypsum-bearing strata and red beds from the Hugoton Embayment further elevate dissolved solids, yielding highly mineralized groundwater typical of the region's Paleozoic aquifer systems.
Scale buildup occurs noticeably in dishwashers, washing machines, water heaters, and coffee makers, reducing efficiency and lifespan. Soap scum forms in bathrooms, and spotting appears on glassware and fixtures. Regular maintenance includes monthly vinegar descaling for appliances; a water softener is recommended to mitigate staining, improve detergent efficiency, and extend plumbing life. The 2026 water quality report indicates good overall quality with no MCL violations and no PFAS above EPA health guidelines, though minor concerns exist for 2 contaminants above health guidelines. Lead and copper compliance is maintained.
Geology & Source: Permian Wellington Formation and Chase Group limestones and dolomites — Central Kansas Uplift; karstic limestone and gypsum-bearing evaporites dissolve readily; elevated calcium and magnesium produce hard groundwater typical of eastern Kansas
Other Kansas Water Reports
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Frequently Asked Questions
Is Gardner's water safe to drink?
Do I need a water softener in Gardner?
How does Gardner compare to the USA average?
Data Sources & Methodology
Water quality data for Gardner 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.