Schiller Park Water Hardness & Quality Report (2026)
Water Hardness
10.3 grains per gallon
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
349.2 mg/L
Est. Daily Cost
$0.47
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 Schiller Park, your appliances are currently losing 23% efficiency due to mineral buildup.
| Appliance | In Schiller Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.8 yrs | 8.5 yrs | -55% |
| Washing Machine | 7.1 yrs | 12 yrs | -41% |
| Water Heater | 8.6 yrs | 15 yrs | -43% |
Regional Water Comparison
How Schiller Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Schiller Park, Illinois | 175.5 mg/L | 6.2 ppt | 🟠 Hard | river |
| Franklin Park, Illinois | 203 mg/L | 7.1 ppt | 🔴 Very Hard | river |
| Norridge, Illinois | 232.5 mg/L | 8.1 ppt | 🔴 Very Hard | river |
| Northlake, Illinois | 254 mg/L | 8.8 ppt | 🔴 Very Hard | river |
| River Grove, Illinois | 138.5 mg/L | 4.9 ppt | 🟠 Hard | river |
National Benchmark
How Schiller Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Schiller Park | 175.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Schiller Park's Water Unique?
Local geology and source profile
Schiller Park, Illinois, in Cook County — a Cook County village adjacent to Franklin Park and River Grove near O'Hare International Airport in northeast Illinois — receives its water from Illinois-American Water or the Village of Schiller Park Water, drawing from Lake Michigan through the northeast Illinois metropolitan distribution.
The hard 175.5 mg/L hardness and TDS of 349.2 mg/L reflect the Cook County Lake Michigan supply's hard dolomitic character — the Silurian Niagaran Dolomite is the primary bedrock formation throughout the Chicago region and produces the characteristic hard water of northeast Illinois (compare Franklin Park IL: 173/344 in Cook County comparable; River Grove IL: 178/354 in Cook County comparable; Schiller Park consistent hard from the same Cook County Lake Michigan Silurian-Devonian dolomitic supply). The Lake Michigan basin at Cook County — Silurian Niagaran Dolomite (highly dolomitic — primary hardness contributor), Devonian Detroit River Formation (calcareous — secondary contributor), and Quaternary glacial drift (calcareous — TDS contributor).
At 175.5 mg/L with TDS 349, Schiller Park's water is hard — scale builds in appliances and fixtures over months. Quarterly descaling is appropriate. The PFAS level of 6.2 ppt warrants a certified drinking water filter — the Cook County Chicago metro industrial corridor and O'Hare airport fire training activities contribute to Schiller Park's elevated readings.
Geology & Source: Schiller Park in Cook County draws from the Illinois-American Water on Lake Michigan (Cook County, northeast Illinois) — the Lake Michigan basin at Cook County is underlain by Silurian Niagaran Dolomite (highly dolomitic) and Devonian Detroit River Formation (calcareous) — Illinois Cook County Lake Michigan Silurian-Devonian dolomitic supply produces hard water at 175.5 mg/L with TDS 349.2 mg/L.