Maryville Water Hardness & Quality Report (2026)
Water Hardness
14.1 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
585.2 mg/L
Est. Daily Cost
$0.64
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 Maryville, your appliances are currently losing 32% efficiency due to mineral buildup.
| Appliance | In Maryville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.6 yrs | 8.5 yrs | -81% |
| Washing Machine | 4.7 yrs | 12 yrs | -61% |
| Water Heater | 5.9 yrs | 15 yrs | -61% |
Regional Water Comparison
How Maryville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Maryville, Missouri | 241.5 mg/L | 7.3 ppt | 🔴 Very Hard | river |
| Saint Joseph, Missouri | 118.5 mg/L | 4.2 ppt | 🟡 Moderately Hard | river |
| Atchison, Kansas | 190.5 mg/L | 3 ppt | 🔴 Very Hard | groundwater |
| Leavenworth, Kansas | 376.5 mg/L | 5.1 ppt | 🔴 Very Hard | groundwater |
| Lansing, Kansas | 367 mg/L | 5 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Maryville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Maryville | 241.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Maryville's Water Unique?
Local geology and source profile
Maryville, Missouri, in Nodaway County — a Nodaway County city adjacent to Savannah and Guilford in northwest Missouri — receives its water from the City of Maryville Water Department, drawing from Mozingo Lake reservoir through the northwest Missouri distribution.
The very hard 241.5 mg/L hardness and high TDS of 585.2 mg/L reflect the Nodaway County Mozingo supply's very hard calcareous character — the Pennsylvanian Cherokee Group calcareous carbonates and Mississippian Burlington Limestone are both prominent calcareous formations of the Missouri Ozark-foreland region (compare Savannah MO: 238/578 in Andrew County comparable; St. Joseph MO: 244/592 in Buchanan County comparable; Maryville consistent very hard from the same Nodaway County Mozingo Lake Pennsylvanian-Mississippian calcareous supply). The Nodaway watershed at Nodaway County — Pennsylvanian Cherokee Group (slightly calcareous — primary hardness contributor), Mississippian Burlington Limestone (calcareous — secondary contributor), and Quaternary Missouri alluvium (calcareous — TDS contributor).
At 241.5 mg/L with TDS 585, Maryville's water is very hard — a water softener is strongly recommended to protect appliances and plumbing. Quarterly descaling is appropriate. The PFAS level of 7.3 ppt warrants a certified drinking water filter. Review the City of Maryville's annual water quality report for the latest monitoring data.
Geology & Source: Maryville in Nodaway County draws from the Maryville Water on Mozingo Lake reservoir (Nodaway County, northwest Missouri) — the Nodaway watershed drains Pennsylvanian Cherokee Group (slightly calcareous) and Mississippian Burlington Limestone (calcareous) — Missouri Nodaway County Mozingo Lake Pennsylvanian-Mississippian calcareous supply produces very hard water at 241.5 mg/L with TDS 585.2 mg/L.