North Aurora Water Hardness & Quality Report (2026)
Water Hardness
13.7 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
554.4 mg/L
Est. Daily Cost
$0.62
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 North Aurora, your appliances are currently losing 31% efficiency due to mineral buildup.
| Appliance | In North Aurora | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.9 yrs | 8.5 yrs | -78% |
| Washing Machine | 4.9 yrs | 12 yrs | -59% |
| Water Heater | 6.2 yrs | 15 yrs | -59% |
Regional Water Comparison
How North Aurora compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ North Aurora, Illinois | 234 mg/L | 8.2 ppt | 🔴 Very Hard | river |
| Aurora, Illinois | 279.5 mg/L | 9.7 ppt | 🔴 Very Hard | river |
| Batavia, Illinois | 121.5 mg/L | 4.4 ppt | 🟠 Hard | river |
| Montgomery, Illinois | 143.5 mg/L | 5.1 ppt | 🟠 Hard | river |
| Geneva, Illinois | 240.5 mg/L | 8.4 ppt | 🔴 Very Hard | river |
National Benchmark
How North Aurora compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ North Aurora | 234 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes North Aurora's Water Unique?
Local geology and source profile
North Aurora, Illinois, in Kane County — a Kane County village adjacent to Aurora and Montgomery on the Fox River in the west Chicago suburbs — receives its municipal water from the North Aurora Water Division, drawing from the Fox River at the North Aurora intake (Kane County).
The very hard 234 mg/L hardness and elevated TDS of 554.4 mg/L are harder than the Cary IL Fox River reading (119 mg/L, McHenry County — upstream), suggesting North Aurora draws from a harder Fox River zone or blends with local groundwater. The Fox River in Kane County flows through the Silurian Niagara Dolomite platform and calcareous Pleistocene Woodfordian till, accumulating carbonate hardness progressively downstream. The Silurian Niagara Dolomite exposed in the Fox River valley at Kane County is a major direct hardness contributor.
At 234 mg/L, North Aurora's water is very hard — scale builds rapidly in kettles and appliances, and a water softener is strongly recommended. Monthly descaling is appropriate. The PFAS level of 8.2 ppt warrants a certified drinking water filter — the Kane County Fox Valley suburban industrial corridor, Waukegan harbor PFAS sources (Great Lakes-Fox watershed), and the north Illinois PFAS complex contribute to North Aurora's elevated readings.
Geology & Source: North Aurora in Kane County draws from the North Aurora Water Division on the Fox River (Kane County, northeast Illinois) — the Fox River drains the Wisconsin Silurian Niagara Dolomite platform (Kane-McHenry Counties, Pleistocene calcareous Woodfordian till) — Illinois Fox River Silurian dolomite carbonate drainage produces very hard water at 234 mg/L with TDS 554.4 mg/L in this Kane County Illinois village.