Leavenworth Water Hardness & Quality Report (2026)
Water Hardness
8.2 grains per gallon
Source
reservoir
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
1169.4 mg/L
Est. Daily Cost
$0.37
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 Leavenworth, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Leavenworth | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5 yrs | 8.5 yrs | -41% |
| Washing Machine | 8.4 yrs | 12 yrs | -30% |
| Water Heater | 10 yrs | 15 yrs | -33% |
Regional Water Comparison
How Leavenworth compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Leavenworth, Kansas | 140 mg/L | 0 ppt | 🟠 Hard | reservoir |
| Lansing, Kansas | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | reservoir |
| Atchison, Kansas | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | reservoir |
| Shawnee, Kansas | ≈ 180+ mg/L | 4.8 ppt | 🔴 Very Hard | groundwater |
| Kansas City, Kansas | ≈ 120–179 mg/L | 5.3 ppt | 🟠 Hard | river |
National Benchmark
How Leavenworth compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Leavenworth | 140 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Leavenworth's Water Unique?
Local geology and source profile
Leavenworth Waterworks serves Leavenworth, Kansas and surrounding areas in Leavenworth County, drawing from a mixed supply of surface water and groundwater. Surface water originates from the Missouri River watershed and is treated at the city's water treatment plant through coagulation, filtration, and disinfection. Groundwater from local wells receives chlorine disinfection before entering the distribution system. The service area includes the city of Leavenworth and nearby rural water districts relying on the same regional sources.
The surface-water component originates in the Missouri River watershed, draining a broad region of the central United States. Groundwater is abstracted from alluvial and glacial-drift aquifers composed of Quaternary sand and gravel, overlying older Cretaceous and Pennsylvanian bedrock formations rich in carbonate minerals. As water moves through these carbonate-bearing sediments and bedrock, it dissolves calcium and magnesium, producing a moderately hard supply typical of northeastern Kansas.
At moderate hardness, mineral scale can accumulate in water heaters, dishwashers, and washing machines, reducing efficiency and shortening appliance lifespans. Showerheads, faucets, and glassware may develop visible deposits, and soap lathering can be reduced, requiring more detergent. Regular descaling is advisable; vinegar-based cleaners help manage buildup on fixtures. A water softener is recommended for households sensitive to scale. Third-party testing has identified arsenic above health guidelines in some samples, and the utility continues to monitor emerging contaminants including PFAS as required by regulatory updates.
Geology & Source: Missouri River watershed and alluvial/glacial-drift aquifers; Quaternary sand and gravel over Cretaceous and Pennsylvanian carbonate bedrock; calcium and magnesium leaching produces moderate hardness
Other Kansas Water Reports
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Frequently Asked Questions
Is Leavenworth's water safe to drink?
Do I need a water softener in Leavenworth?
How does Leavenworth compare to the USA average?
Data Sources & Methodology
Water quality data for Leavenworth 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.