Saint Joseph Water Hardness & Quality Report (2026)
Water Hardness
6.9 grains per gallon
Source
river
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
204.1 mg/L
Est. Daily Cost
$0.32
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 Saint Joseph, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Saint Joseph | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.7 yrs | 8.5 yrs | -33% |
| Washing Machine | 9.2 yrs | 12 yrs | -23% |
| Water Heater | 10.9 yrs | 15 yrs | -27% |
Regional Water Comparison
How Saint Joseph compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Saint Joseph, Missouri | 118.5 mg/L | 4.2 ppt | 🟡 Moderately Hard | river |
| Leavenworth, Kansas | 376.5 mg/L | 5.1 ppt | 🔴 Very Hard | groundwater |
| Gladstone, Missouri | 250.5 mg/L | 7.5 ppt | 🔴 Very Hard | river |
| Liberty, Missouri | 195.5 mg/L | 6.1 ppt | 🔴 Very Hard | river |
| Kansas City, Kansas | 314.5 mg/L | 4.4 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Saint Joseph compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Saint Joseph | 118.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Saint Joseph's Water Unique?
Local geology and source profile
St. Joseph, Missouri, in Buchanan County on the Missouri River bluffs — historically the eastern terminus of the Pony Express and the place Jesse James died — draws its municipal water supply from the Missouri River via the City of St. Joseph Water Division, treating Missouri River water at the Waterworks Improvement Plant serving the St. Joseph metropolitan area. St. Joseph is situated on the Missouri River at the western edge of Missouri's Ozark-influenced topography. Water hardness in St. Joseph measures 118.5 mg/L — classified as moderately hard.
St. Joseph's moderate hardness on the Missouri River source — lower than Kansas City (200+ mg/L) and St. Charles/O'Fallon (279 mg/L) further downstream — reflects the upper Missouri River reach above the Platte and Kansas River confluences, which contribute the bulk of the Missouri River's mineral load. At St. Joseph's location upstream of the Platte River mouth (Nebraska City, NE), the Missouri River has received significant mineral input from the Cretaceous Niobrara Chalk (South Dakota and Nebraska) and Pierre Shale drainage, but has not yet accumulated the full load from the highly calcareous Platte River (Nebraska loess and chalk drainage) and Kansas River (Kansas limestone drainage) that dramatically raise hardness at Kansas City and downstream. The moderately hard 118.5 mg/L reflects the upper Missouri Basin mineral load at the Buchanan County reach.
At 118.5 mg/L, St. Joseph residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical. City of St. Joseph Water Division consistently delivers water meeting all Missouri DNR and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Missouri River via the City of St. Joseph Water Division — the Missouri River at the St. Joseph reach collects calcareous Cretaceous Niobrara Chalk, Pierre Shale, and Quaternary loess drainage from the Missouri Basin; moderately hard supply at 118.5 mg/L in Buchanan County.