Libertyville Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
river
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
211.5 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Libertyville, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Libertyville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Libertyville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Libertyville, Illinois | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Mundelein, Illinois | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Vernon Hills, Illinois | 276.5 mg/L | 0 ppt | 🔴 Very Hard | river |
| Gages Lake, Illinois | ≈ 120–179 mg/L | 7.9 ppt | 🟠 Hard | river |
| Gurnee, Illinois | 146.5 mg/L | 0 ppt | 🟠 Hard | river |
National Benchmark
How Libertyville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Libertyville | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Libertyville's Water Unique?
Local geology and source profile
The Village of Libertyville Public Works Department manages water services for the Village of Libertyville in Lake County, Illinois. Water is sourced exclusively from Lake Michigan and treated at the Central Lake County Joint Action Water Agency's (CLCJAWA) Paul M. Neal Water Treatment Facility located in Lake Forest. This plant processes raw lake water through conventional treatment including coagulation, sedimentation, filtration, and disinfection before distribution via the village's delivery system.
The watershed is Lake Michigan, part of the expansive Great Lakes system. Underlying geology features Paleozoic carbonate rock formations including the Ordovician Maquoketa Group shales and Silurian dolomite beds, with surficial glacial tills from Pleistocene advances. These limestones and dolomites dissolve gradually, imparting a moderately mineralised character to the surface water through mineral leaching in the catchment soils, influencing overall hardness without aggressive corrosivity.
At this moderately hard level, water promotes scale buildup in pipes and affects hot water heaters, dishwashers, and washing machines by forming deposits that shorten appliance life and increase energy costs. White mineral residues appear on fixtures and glassware, while soap lathering diminishes. Regular vinegar-based cleaning of faucets and showerheads helps; a water softener is recommended for households noticing these effects. The 2023 Consumer Confidence Report confirms compliance with Safe Drinking Water Act standards, with lead and copper levels below action limits. Emerging contaminants including PFAS have been screened since 2008, showing non-detectable or compliant results.
Geology & Source: Lake Michigan surface water source; Paleozoic Ordovician-Silurian limestone and dolomite bedrock underlies the Great Lakes basin — glacial drift deposits and carbonate-derived soils in watershed contribute dissolved calcium and magnesium, producing
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Frequently Asked Questions
Is Libertyville's water safe to drink?
Do I need a water softener in Libertyville?
How does Libertyville compare to the USA average?
Data Sources & Methodology
Water quality data for Libertyville is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.