Belleville Water Hardness & Quality Report (2026)
Water Hardness
6.5 grains per gallon
Source
river
pH Level
7.6
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
175.6 mg/L
Est. Daily Cost
$0.30
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 Belleville, your appliances are currently losing 15% efficiency due to mineral buildup.
| Appliance | In Belleville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.9 yrs | 8.5 yrs | -31% |
| Washing Machine | 9.5 yrs | 12 yrs | -21% |
| Water Heater | 11.1 yrs | 15 yrs | -26% |
Regional Water Comparison
How Belleville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Belleville, Illinois | 111.5 mg/L | 4 ppt | 🟡 Moderately Hard | river |
| Swansea, Illinois | 234 mg/L | 8.2 ppt | 🔴 Very Hard | river |
| Fairview Heights, Illinois | 236 mg/L | 8.2 ppt | 🔴 Very Hard | river |
| Shiloh, Illinois | 155.5 mg/L | 5.5 ppt | 🟠 Hard | river |
| O'Fallon, Illinois | 239.5 mg/L | 8.4 ppt | 🔴 Very Hard | river |
National Benchmark
How Belleville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Belleville | 111.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Belleville's Water Unique?
Local geology and source profile
Belleville, Illinois, the St. Clair County seat in the Metro East St. Louis area — a major south-central Illinois city, the largest city in the Illinois Metro East (the Illinois side of the St. Louis metropolitan area), home of Scott Air Force Base (US Air Force Air Mobility Command and USTRANSCOM headquarters), Belleville News-Democrat, and a historically German-American community with a strong Catholic heritage and a growing diverse Metro East Illinois community — draws its municipal water supply from Illinois American Water via the Belleville Water Division. Water hardness in Belleville measures 111.5 mg/L — classified as moderately hard.
Belleville's moderate hardness reflects the St. Clair County Metro East Illinois supply characteristics. The Illinois American Water supply system in Metro East St. Louis area uses a blend of the Mississippi River and regional aquifer sources. The Ordovician–Silurian calcareous dolomite aquifer underlying the Metro East Illinois plain (the Galena Dolomite and Niagara Dolomite of the Illinois basin — the major calcareous formations of the southern Illinois Paleozoic carbonate sequence) and the Wisconsin Age calcareous glacial till overburden contribute dissolved minerals. Illinois American Water's treatment produces the moderate 111.5 mg/L at Belleville.
At 111.5 mg/L, Belleville residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended for faucet aerators and showerheads. Illinois American Water consistently delivers water meeting all Illinois EPA and federal EPA Safe Drinking Water Act requirements.
Geology & Source: Lake supply from Lake Michigan via the St. Clair County water system and the American Water Illinois — the St. Clair County Illinois Metro East St. Louis corridor (Ordovician–Silurian calcareous dolomite of the Illinois basin and MWRD Metropolitan distribution infrastructure); moderately hard supply at 111.5 mg/L in St. Clair County.