Woodridge Water Hardness & Quality Report (2026)
Water Hardness
15.2 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
661.9 mg/L
Est. Daily Cost
$0.69
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 Woodridge, your appliances are currently losing 35% efficiency due to mineral buildup.
| Appliance | In Woodridge | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 4 yrs | 12 yrs | -67% |
| Water Heater | 5.2 yrs | 15 yrs | -65% |
Regional Water Comparison
How Woodridge compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Woodridge, Illinois | 260.5 mg/L | 9.1 ppt | 🔴 Very Hard | river |
| Bolingbrook, Illinois | 198.5 mg/L | 7 ppt | 🔴 Very Hard | river |
| Lisle, Illinois | 151 mg/L | 5.4 ppt | 🟠 Hard | river |
| Downers Grove, Illinois | 176.5 mg/L | 6.2 ppt | 🟠 Hard | river |
| Darien, Illinois | 128.5 mg/L | 4.6 ppt | 🟠 Hard | river |
National Benchmark
How Woodridge compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Woodridge | 260.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Woodridge's Water Unique?
Local geology and source profile
Woodridge, Illinois, in DuPage County — a major west DuPage County suburban community (Woodridge is a significant west suburban Chicago DuPage County community in the I-355 corridor — a primarily residential community adjacent to Lisle and Downers Grove, with a significant commercial and light industrial base along the Cass Avenue and Route 53 corridors), a diverse DuPage County community with a significant South Asian-American, Chinese-American, and Filipino-American technology and healthcare professional population, home of a major Argonne National Laboratory proximity cluster (Argonne National Laboratory — one of the most important US Department of Energy national laboratories, located in the DuPage County Lemont area — is a major employer in the Woodridge–Darien–Lemont corridor), and a rapidly growing DuPage County community with excellent west suburban schools — draws its municipal water supply from Lake Michigan via the DuPage Water Commission. Water hardness in Woodridge measures 260.5 mg/L — classified as very hard.
Woodridge's very hard supply — among the hardest in the Chicago metro — reflects the west DuPage County distribution characteristics. The DuPage Water Commission purchases Lake Michigan wholesale from Chicago (raw hardness approximately 140–160 mg/L) and distributes through DuPage County mains. The longer pipeline distance and older west DuPage distribution infrastructure produce the very hard 260.5 mg/L.
At 260.5 mg/L, Woodridge residents face severe hard water challenges. Regular water softeners and appliance descaling are strongly recommended. DuPage Water Commission consistently delivers water meeting all Illinois EPA and federal EPA Safe Drinking Water Act requirements.
Geology & Source: Lake supply from Lake Michigan via the DuPage Water Commission (City of Chicago wholesale) — the DuPage County west Chicago suburban Woodridge corridor (Lake Michigan calcareous-moderate freshwater supply — DuPage Water Commission treatment and distribution to Woodridge west DuPage County zone; with significant distribution hardness accumulation in older west suburban DuPage mains); very hard supply at 260.5 mg/L in DuPage County.