Roselle 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
351 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 Roselle, your appliances are currently losing 23% efficiency due to mineral buildup.
| Appliance | In Roselle | 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 Roselle compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Roselle, Illinois | 176 mg/L | 6.2 ppt | 🟠 Hard | river |
| Bloomingdale, Illinois | 190.5 mg/L | 6.7 ppt | 🔴 Very Hard | river |
| Schaumburg, Illinois | 173 mg/L | 6.1 ppt | 🟠 Hard | river |
| Hoffman Estates, Illinois | 233.5 mg/L | 8.2 ppt | 🔴 Very Hard | river |
| Hanover Park, Illinois | 161.5 mg/L | 5.7 ppt | 🟠 Hard | river |
National Benchmark
How Roselle compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Roselle | 176 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Roselle's Water Unique?
Local geology and source profile
Roselle, Illinois, in DuPage County in the northwest Chicago suburbs along the Metra Milwaukee District West commuter line — a residential DuPage County village near Schaumburg and Bloomingdale — receives its municipal water from the Village of Roselle Public Works Water Division, which purchases treated water from the DuPage Water Commission (DWC). The DWC sources its supply from Lake Michigan via the Chicago Department of Water Management regional system, supplemented by Fox River corridor inputs in some DuPage service zones.
The moderately hard 176 mg/L hardness and TDS of 351 mg/L reflect DuPage County's blended supply character combining Lake Michigan and regional river sources. Lake Michigan itself carries moderate carbonate hardness (~130–150 mg/L) from tributary drainage draining the Silurian Niagara Dolomite reefs across Michigan, Wisconsin, and northern Illinois. Supplemental Fox River supply in the DuPage zone adds higher carbonate inputs from the Fox River's drainage over the dolomite formations of Kane and DuPage counties, raising the finished hardness above the Lake Michigan baseline. The combined regional DuPage supply consistently produces moderately hard finished water.
At 176 mg/L, Roselle residents face moderately hard water typical of suburban DuPage County communities. Scale builds in kettles and coffee machines within weeks to months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling of heating appliances is the standard schedule. The PFAS level of 6.2 ppt warrants a certified drinking water filter — DuPage County's industrial corridor and the broader Chicago northwest suburb industrial land use contribute to the regional PFAS background in the Lake Michigan-DuPage supply system.
Geology & Source: Roselle in DuPage County draws from the DuPage Water Commission purchasing Lake Michigan treated water via the Chicago Water System, with supplemental Fox River supply — the Fox River drains DuPage and Kane County over the Silurian Niagara Dolomite carbonate plain — Lake Michigan and Fox River dolomite corridor drainage produces moderately hard water at 176 mg/L in this DuPage County suburb.