Sedalia Water Hardness & Quality Report (2026)
Water Hardness
11.6 grains per gallon
Source
river
pH Level
8.2
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
434.3 mg/L
Est. Daily Cost
$0.53
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 Sedalia, your appliances are currently losing 27% efficiency due to mineral buildup.
| Appliance | In Sedalia | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3 yrs | 8.5 yrs | -65% |
| Washing Machine | 6.2 yrs | 12 yrs | -48% |
| Water Heater | 7.6 yrs | 15 yrs | -49% |
Regional Water Comparison
How Sedalia compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Sedalia, Missouri | 199 mg/L | 6.2 ppt | 🔴 Very Hard | river |
| Marshall, Missouri | 161 mg/L | 5.2 ppt | 🟠 Hard | river |
| Warrensburg, Missouri | 234.5 mg/L | 7.1 ppt | 🔴 Very Hard | river |
| Columbia, Missouri | 181.5 mg/L | 5.8 ppt | 🔴 Very Hard | river |
| Grain Valley, Missouri | 284 mg/L | 8.4 ppt | 🔴 Very Hard | river |
National Benchmark
How Sedalia compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Sedalia | 199 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Sedalia's Water Unique?
Local geology and source profile
Sedalia, Missouri, in Pettis County — the Pettis County seat in west-central Missouri, a historic agricultural and railroad city on the Missouri Pacific Railroad (now Union Pacific) main line, home of the Missouri State Fair (held annually since 1901) and birthplace of ragtime composer Scott Joplin's professional career — receives its municipal water from the Sedalia Water Treatment Plant, which draws from the Lamine River or Moniteau Creek in the central Missouri Osage Plains watershed. The Lamine River system provides water to the Sedalia-Pettis County municipal supply zone.
The hard 199 mg/L hardness and elevated TDS of 434.3 mg/L reflect the Lamine River watershed's Pennsylvanian cyclothem carbonate geology. The Lamine River drains the Osage Plains of west-central Missouri — an unglaciated prairie plateau underlain by the Pennsylvanian carbonate cyclothem sequence: the Marmaton Group, Cherokee Group (Verdigris Limestone, Croweburg Coal, and related formations), and Douglas Group — alternating layers of limestone, shale, and coal deposited in shallow tropical seas during the Pennsylvanian (Carboniferous). These Missouri Pennsylvanian limestones weather readily, contributing substantial dissolved calcium, magnesium, and bicarbonate to the Lamine River throughout the year. The Osage Plains' extensive limestone outcrops and spring discharge maintain consistently hard river water in the Sedalia reach.
At 199 mg/L, Sedalia's water is hard — scale builds in kettles and appliances within weeks, dishwashers require rinse aid or softener salt, and bathroom fixtures develop calcium encrustation. Monthly descaling of heating appliances is practical. A water softener is recommended for Sedalia homes with dishwashers and water heaters. The PFAS level of 6.2 ppt warrants a certified drinking water filter — the central Missouri Lamine River agricultural corridor, Whiteman Air Force Base (Knob Noster, Johnson County, west of Sedalia — a major B-2 Stealth Bomber base and significant AFFF user), and the west-central Missouri military-agricultural PFAS background contribute to the Sedalia supply's PFAS level.
Geology & Source: Sedalia in Pettis County draws from the Sedalia Water Treatment Plant treating the Lamine River or Moniteau Creek — the Lamine River drains the Osage Plains of central Missouri (Pennsylvanian Marmaton Group and Cherokee Group limestone and shale cyclothems) — Pennsylvanian cyclothem limestone and shale drainage from the Missouri Osage Plains produces hard water at 199 mg/L with elevated TDS 434 mg/L in this Pettis County central Missouri city.