Freeport Water Hardness & Quality Report (2026)
Water Hardness
12.3 grains per gallon
Source
river
pH Level
8.3
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
466.8 mg/L
Est. Daily Cost
$0.56
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 Freeport, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Freeport | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.7 yrs | 8.5 yrs | -68% |
| Washing Machine | 5.8 yrs | 12 yrs | -52% |
| Water Heater | 7.2 yrs | 15 yrs | -52% |
Regional Water Comparison
How Freeport compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Freeport, Illinois | 210.5 mg/L | 7.4 ppt | 🔴 Very Hard | river |
| Dixon, Illinois | 165 mg/L | 5.8 ppt | 🟠 Hard | river |
| Sterling, Illinois | 116 mg/L | 4.2 ppt | 🟡 Moderately Hard | river |
| Rockford, Illinois | 160.5 mg/L | 5.7 ppt | 🟠 Hard | river |
| Loves Park, Illinois | 186.5 mg/L | 6.6 ppt | 🔴 Very Hard | river |
National Benchmark
How Freeport compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Freeport | 210.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Freeport's Water Unique?
Local geology and source profile
Freeport, Illinois, in Stephenson County in the northwestern Illinois Rock River region — historically significant as a site of the famous 1858 Lincoln-Douglas Debates — receives its municipal water from the City of Freeport Water Division, drawing from the Pecatonica River. The Pecatonica flows eastward through southern Wisconsin and northern Illinois before joining the Rock River near Rockton. Freeport's water intake processes Pecatonica River water at the city's treatment facility before distribution through Stephenson County's municipal grid, serving this community historically known for its manufacturing and agricultural heritage.
The very hard 210.5 mg/L hardness and elevated TDS of 466.8 mg/L reflect the Pecatonica River's drainage through the northwestern Illinois carbonate plains. The Pecatonica basin overlies the Silurian Niagara Dolomite — the same ancient reef-derived carbonate formation producing very hard water throughout northeastern Illinois and southeastern Wisconsin — along with Ordovician Galena Group and Platteville Formation carbonates exposed in the deeper valley sections. River baseflow is heavily sustained by groundwater discharge from the dolomite aquifer, which contributes calcium and magnesium bicarbonate in quantities reflecting direct dolomite contact throughout the watershed.
At 210.5 mg/L, Freeport residents deal with very hard water requiring regular mineral management throughout the home. Scale accumulates rapidly in kettles and appliances within weeks, dishwashers leave white mineral deposits on all glassware, and bathroom surfaces develop calcium crust requiring regular acidic cleaning. The high TDS contributes a noticeable mineral taste to drinking water. Descaling appliances every six weeks is the practical cadence for Freeport households. A whole-house water softener is highly recommended to protect plumbing and extend appliance life in this consistently hard-water northwestern Illinois community. The PFAS level of 7.4 ppt additionally warrants a certified drinking water filter for daily use.
Geology & Source: Freeport in Stephenson County draws from the Pecatonica River — a Rock River tributary flowing through the dolomite plains of northwestern Illinois — the Pecatonica basin overlies Silurian Niagara Dolomite and Ordovician carbonate formations typical of the Illinois-Wisconsin border carbonate terrain — dolomite basin drainage produces very hard water at 210.5 mg/L with high TDS characteristic of northern Illinois carbonate river systems.