Saint Ann Water Hardness & Quality Report (2026)
Water Hardness
5.8 grains per gallon
Source
river
pH Level
7.6
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
161.6 mg/L
Est. Daily Cost
$0.27
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 Ann, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Saint Ann | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.3 yrs | 8.5 yrs | -26% |
| Washing Machine | 9.9 yrs | 12 yrs | -17% |
| Water Heater | 11.6 yrs | 15 yrs | -23% |
Regional Water Comparison
How Saint Ann compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Saint Ann, Missouri | 100 mg/L | 3.7 ppt | 🟡 Moderately Hard | river |
| Overland, Missouri | 145.5 mg/L | 4.8 ppt | 🟠 Hard | river |
| Hazelwood, Missouri | 201.5 mg/L | 6.3 ppt | 🔴 Very Hard | river |
| Maryland Heights, Missouri | 171.5 mg/L | 5.5 ppt | 🟠 Hard | river |
| Creve Coeur, Missouri | 251.5 mg/L | 7.6 ppt | 🔴 Very Hard | river |
National Benchmark
How Saint Ann compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Saint Ann | 100 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 Ann's Water Unique?
Local geology and source profile
Saint Ann, Missouri, in Saint Louis County — a Saint Louis County city adjacent to St. Louis and Berkeley in east-central Missouri — receives its water from the Missouri American Water, drawing from the Missouri River (Saint Louis County) through the Saint Louis metro distribution.
The moderately hard 100 mg/L hardness and TDS of 161.6 mg/L reflect the east-central Missouri Saint Louis County Missouri River supply's moderate calcareous character — somewhat softer than the Marshall MO Missouri River draw (161 mg/L/316 TDS) because the Saint Louis County draw at the Missouri-Mississippi confluence receives greater dilution from the Mississippi River's different calcareous composition. The Missouri River at Saint Louis County — Ordovician Gasconade Dolomite (dolomitic — primary hardness contributor from Ozark drainage), Pennsylvanian Cherokee Group (calcareous — secondary contributor), and Quaternary Missouri River alluvium (calcareous — TDS contributor).
At 100 mg/L, Saint Ann's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 3.7 ppt warrants a certified drinking water filter — the Saint Louis County east Missouri industrial corridor contribute to Saint Ann's readings.
Geology & Source: Saint Ann in Saint Louis County draws from the Missouri American Water on the Missouri River (Saint Louis County, east-central Missouri) — the Missouri River at Saint Louis County drains the Ozark Plateau (Ordovician Gasconade Dolomite — dolomitic) and Pennsylvanian Cherokee Group (calcareous) — Missouri Saint Louis County Missouri River Ordovician-Pennsylvanian calcareous supply produces moderately hard water at 100 mg/L with TDS 161.6 mg/L.