Machesney Park Water Hardness & Quality Report (2026)
Water Hardness
11.8 grains per gallon
Source
river
pH Level
8.2
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
438.6 mg/L
Est. Daily Cost
$0.54
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 Machesney Park, your appliances are currently losing 27% efficiency due to mineral buildup.
| Appliance | In Machesney Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.9 yrs | 8.5 yrs | -66% |
| Washing Machine | 6.1 yrs | 12 yrs | -49% |
| Water Heater | 7.5 yrs | 15 yrs | -50% |
Regional Water Comparison
How Machesney Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Machesney Park, Illinois | 202.5 mg/L | 7.1 ppt | 🔴 Very Hard | river |
| Loves Park, Illinois | 186.5 mg/L | 6.6 ppt | 🔴 Very Hard | river |
| Rockford, Illinois | 160.5 mg/L | 5.7 ppt | 🟠 Hard | river |
| Beloit, Wisconsin | 100 mg/L | 3.1 ppt | 🟡 Moderately Hard | groundwater |
| Belvidere, Illinois | 140.5 mg/L | 5 ppt | 🟠 Hard | river |
National Benchmark
How Machesney Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Machesney Park | 202.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Machesney Park's Water Unique?
Local geology and source profile
Machesney Park, Illinois, in Winnebago County north of Rockford along the Rock River — a large Winnebago County suburb and one of Illinois's more populous unincorporated communities, developed rapidly in the postwar decades as part of the greater Rockford metropolitan area — receives its municipal water from the Machesney Park Utilities or through purchase from the City of Rockford Water Division, which draws from the Rock River through Rockford's river intake system. The Rock River is the primary water source for all Rockford-area communities in Winnebago County.
The very hard 202.5 mg/L hardness and elevated TDS of 438.6 mg/L reflect the Rock River's intensive carbonate basin drainage. The Rock River originates in Wisconsin and drains southwestward across the Wisconsin Driftless Area and northern Illinois — a landscape underlain by the Ordovician Galena-Platteville Dolomite platform (one of the most extensive carbonate formations in the upper Midwest), the Silurian Niagara Dolomite, and the Ordovician Galena Group limestone. The Rock River's flow is substantially sustained by carbonate aquifer baseflow from these formations, maintaining consistently high calcium and magnesium bicarbonate concentrations year-round regardless of precipitation patterns.
At 202.5 mg/L, Machesney Park residents face very hard water — the standard condition for Rockford metro communities on the Rock River supply. Scale builds rapidly in kettles and coffee machines within weeks, dishwashers require rinse aid or softener treatment, and bathroom fixtures develop stubborn calcium deposits. Descaling appliances every four to six weeks is the appropriate schedule. A whole-house water softener is strongly recommended for Winnebago County homes. The PFAS level of 7.1 ppt warrants a certified drinking water filter — Winnebago County's Rockford industrial history (formerly a manufacturing center for screws, machine tools, and chemicals) contributes to elevated PFAS in the Rock River watershed.
Geology & Source: Machesney Park in Winnebago County draws from the Rock River — the Rock River drains the Wisconsin Driftless Area and the Ordovician Galena-Platteville Dolomite platform of northern Illinois over the Silurian Niagara Dolomite carbonate bench — consistent carbonate Rock River basin drainage from the northern Illinois dolomite plain produces very hard water at 202.5 mg/L with TDS 439 mg/L in this Rockford-area community.