Wildwood 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 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 Wildwood, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Wildwood | 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 Wildwood compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Wildwood, Missouri | 118.5 mg/L | 4.1 ppt | 🟡 Moderately Hard | river |
| Ballwin, Missouri | 87.5 mg/L | 3.3 ppt | 🟡 Moderately Hard | river |
| Chesterfield, Missouri | 107.5 mg/L | 3.9 ppt | 🟡 Moderately Hard | river |
| Manchester, Missouri | 137 mg/L | 4.6 ppt | 🟠 Hard | river |
| Dardenne Prairie, Missouri | 289.5 mg/L | 8.5 ppt | 🔴 Very Hard | river |
National Benchmark
How Wildwood compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Wildwood | 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 Wildwood's Water Unique?
Local geology and source profile
Wildwood, Missouri, in St. Louis County — a major west St. Louis County community (Wildwood is the largest city by area in St. Louis County — incorporated in 1995 from several western St. Louis County communities to prevent annexation by neighboring municipalities), an affluent west St. Louis County community known for its rural character and large lot residential zoning (Wildwood maintains significant green space and wooded character for a suburban community adjacent to a major metro), adjacent to the Meramec River and Route 66 State Park, and a diverse St. Louis County community with significant professional and executive populations in the western suburban corridor — draws its municipal water supply via Missouri American Water (the same distribution system as Oakville, serving the west St. Louis County zone). Water hardness in Wildwood measures 118.5 mg/L — classified as moderately hard.
Wildwood's moderate hardness reflects Missouri American Water's treatment of the St. Louis County supply. The Missouri River and Mississippi River blend processed by Missouri American Water draws from the Ordovician Gasconade Dolomite (highly calcareous Ozark dolomite) and the Devonian Jefferson City Formation (calcareous). Missouri American Water's treatment and distribution to the west St. Louis County Wildwood zone produce the moderate 118.5 mg/L.
At 118.5 mg/L, Wildwood residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended. Missouri American Water consistently delivers water meeting all Missouri DNR and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Missouri River (Missouri American Water Eureka–Wildwood service) via the Missouri American Water — the St. Louis County west Missouri exurban Meramec River corridor (Ordovician–Silurian calcareous dolomite and Devonian calcareous limestone of the Missouri Ozark Dome; west St. Louis County distribution); moderately hard supply at 118.5 mg/L in St. Louis County.