West Chicago Water Hardness & Quality Report (2026)
Water Hardness
10.5 grains per gallon
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
362.1 mg/L
Est. Daily Cost
$0.48
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 West Chicago, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In West Chicago | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.4 yrs | 15 yrs | -44% |
Regional Water Comparison
How West Chicago compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ West Chicago, Illinois | 179.5 mg/L | 6.3 ppt | 🟠 Hard | river |
| Warrenville, Illinois | 148 mg/L | 5.3 ppt | 🟠 Hard | river |
| Carol Stream, Illinois | 113.5 mg/L | 4.1 ppt | 🟡 Moderately Hard | river |
| Wheaton, Illinois | 203 mg/L | 7.1 ppt | 🔴 Very Hard | river |
| Geneva, Illinois | 240.5 mg/L | 8.4 ppt | 🔴 Very Hard | river |
National Benchmark
How West Chicago compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ West Chicago | 179.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes West Chicago's Water Unique?
Local geology and source profile
West Chicago, Illinois, in DuPage County — a major west Chicago suburban community (West Chicago is a significant DuPage County city — a west Chicago suburb adjacent to Wheaton and Carol Stream; West Chicago is known for its significant railroad history (West Chicago was originally named 'Turner Junction' — the point where the Galena and Chicago Union Railroad, the first railroad out of Chicago, met the Geneva branch; West Chicago's railroads made it an important industrial junction point in the 19th century west suburban corridor); West Chicago is home of a significant Hispanic-American, particularly Mexican-American, community (West Chicago has one of the largest Hispanic-American populations in DuPage County — Mexican-American families settled in West Chicago for employment in local manufacturing and services, and the community now has significant Spanish-speaking businesses and services)), a diverse DuPage County community with a significant Hispanic-American, working-class, and diverse suburban family population, adjacent to Wheaton and Carol Stream in the west DuPage County corridor — draws its municipal water supply from the Silurian Dolomite aquifer via the City of West Chicago Water Division. Water hardness in West Chicago measures 179.5 mg/L — classified as hard.
West Chicago's hard supply reflects the west Chicago DuPage County Silurian dolomite aquifer's calcareous character. The Niagaran Dolomite aquifer at West Chicago draws from the Silurian Niagaran Dolomite (calcareous). City of West Chicago applies limited softening, producing the hard 179.5 mg/L.
At 179.5 mg/L, West Chicago residents face regular hard water challenges. Monthly descaling and water softeners are recommended. City of West Chicago Water Division consistently delivers water meeting all Illinois EPA and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Silurian Dolomite aquifer (Niagaran Dolomite) via the City of West Chicago Water Division — the DuPage County west Chicago suburban West Chicago corridor (Silurian calcareous Niagaran Dolomite — the extremely calcareous west Chicago DuPage County Silurian dolomite aquifer; limited softening); hard supply at 179.5 mg/L in DuPage County.