Round Lake Beach Water Hardness & Quality Report (2026)
Water Hardness
10.5 grains per gallon
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
365.4 mg/L
Est. Daily Cost
$0.48
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 Round Lake Beach, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Round Lake Beach | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.6 yrs | 8.5 yrs | -58% |
| Washing Machine | 6.9 yrs | 12 yrs | -43% |
| Water Heater | 8.4 yrs | 15 yrs | -44% |
Regional Water Comparison
How Round Lake Beach compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Round Lake Beach, Illinois | 180.5 mg/L | 6.4 ppt | 🔴 Very Hard | river |
| Round Lake, Illinois | 180.5 mg/L | 6.4 ppt | 🔴 Very Hard | river |
| Grayslake, Illinois | 118 mg/L | 4.3 ppt | 🟡 Moderately Hard | river |
| Lindenhurst, Illinois | 146 mg/L | 5.2 ppt | 🟠 Hard | river |
| Antioch, Illinois | 249.5 mg/L | 8.7 ppt | 🔴 Very Hard | river |
National Benchmark
How Round Lake Beach compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Round Lake Beach | 180.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Round Lake Beach's Water Unique?
Local geology and source profile
Round Lake Beach, Illinois, in Lake County — a major north Chicago suburban community (Round Lake Beach is a significant Lake County village — a north Chicago suburb in the Chain O'Lakes area adjacent to Round Lake Park and Grayslake; Round Lake Beach is part of the Chain O'Lakes region, a cluster of natural lakes in northern Lake County that are one of the most important recreational and residential amenities in the Chicago north suburban belt; the Chain O'Lakes communities (Round Lake, Round Lake Beach, Round Lake Park, Fox Lake, Antioch) have a strong boating, fishing, and water recreation culture), a diverse Lake County community with a significant Hispanic-American and working-class suburban population (Round Lake Beach has one of the most significant Mexican-American communities in north Lake County, with significant Spanish-speaking businesses and services), adjacent to Grayslake and Gages Lake in the north Lake County corridor, and a community shaped by its Chain O'Lakes recreational proximity — draws its municipal water supply from the Silurian Dolomite aquifer via the Village of Round Lake Beach Water Division. Water hardness in Round Lake Beach measures 180.5 mg/L — classified as hard.
Round Lake Beach's hard supply reflects the north Chicago Lake County Silurian dolomite aquifer's calcareous character. The Niagaran Dolomite aquifer at Round Lake Beach draws from the Silurian Niagaran Dolomite (calcareous). Village of Round Lake Beach applies limited softening, producing the hard 180.5 mg/L.
At 180.5 mg/L, Round Lake Beach residents face regular hard water challenges. Monthly descaling and water softeners are recommended. Village of Round Lake Beach Water Division consistently delivers water meeting all Illinois EPA and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Silurian Dolomite aquifer (Niagaran Dolomite) via the Village of Round Lake Beach Water Division — the Lake County north Chicago suburban Round Lake Beach corridor (Silurian calcareous Niagaran Dolomite — the extremely calcareous north Chicago Lake County Silurian dolomite aquifer; limited softening); hard supply at 180.5 mg/L in Lake County.