Leavenworth Water Hardness & Quality Report (2026)
Water Hardness
22 grains per gallon
Source
groundwater
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
1169.4 mg/L
Est. Daily Cost
$1.00
energy & soap waste
Source: USGS Water Quality Portal · 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 45% efficiency due to mineral buildup.
| Appliance | In Leavenworth | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Leavenworth compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Leavenworth, Kansas | 376.5 mg/L | 5.1 ppt | 🔴 Very Hard | groundwater |
| Shawnee, Kansas | 347.5 mg/L | 4.8 ppt | 🔴 Very Hard | groundwater |
| Kansas City, Kansas | 314.5 mg/L | 4.4 ppt | 🔴 Very Hard | groundwater |
| Gladstone, Missouri | 250.5 mg/L | 7.5 ppt | 🔴 Very Hard | river |
| Kansas City, Missouri | 256 mg/L | 7.7 ppt | 🔴 Very Hard | river |
National Benchmark
How Leavenworth compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Leavenworth | 376.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Leavenworth's Water Unique?
Local geology and source profile
Leavenworth, Kansas, the Leavenworth County seat — a major northeast Kansas Missouri River city with profound military history (Fort Leavenworth in Leavenworth is the oldest US Army post west of the Mississippi River, continuously in operation since 1827; the US Army Combined Arms Center and US Army Command and General Staff College — the principal school for mid-career Army officers — are located at Fort Leavenworth), home of the United States Disciplinary Barracks (the only maximum security prison in the federal military system), a diverse Leavenworth County community with a significant military and corrections professional population, and a major northeast Kansas Missouri River community — draws its municipal water supply from the Missouri River via the City of Leavenworth Water Division. Water hardness in Leavenworth measures 376.5 mg/L — classified as extremely hard.
Leavenworth's extremely hard supply reflects the northeast Kansas Carboniferous Platform's highly calcareous geology and the Missouri River's extreme mineral load. The Missouri River at Leavenworth–Leavenworth County carries dissolved minerals from: the Pennsylvanian Kansas City Group limestone and shale (highly calcareous marine limestone and dolomite of the northeast Kansas Carboniferous Platform); the Permian Permian Chase Group calcareous evaporite and carbonate (the Kansas Permian calcareous dolomite and anhydrite-bearing formations); and the Missouri River alluvial load from the Rocky Mountains and Great Plains calcareous geology. City of Leavenworth applies limited softening, producing the extreme 376.5 mg/L.
At 376.5 mg/L, Leavenworth residents face extremely severe hard water challenges. Water softeners are essentially a necessity. City of Leavenworth Water Division consistently delivers water meeting all Kansas KDHE and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Missouri River via the City of Leavenworth Water Division — the Leavenworth County northeast Kansas Missouri River Valley (Pennsylvanian–Permian calcareous limestone and dolomite of the Osage Cuesta Plains and Kansas City Group — the highly calcareous northeast Kansas Carboniferous carbonate; Missouri River alluvial supply with limited softening); extremely hard supply at 376.5 mg/L in Leavenworth County.