Lake Zurich, IL: 4 Violations — 57/100 (2026)
1 ZIP code · 12 water systems · Updated 2026-06-03
Although much of Lake Zurich meets baseline drinking water standards, some IL-tracked service areas show violations that merit a closer look — particularly for older housing stock.
How Lake Zurich Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Lake Zurich Water
- Your city's water systems recorded 4 violations in the past 5 years.
- Average lead level: 0.0102 mg/L.
- Homes built before 1986: 47% — older plumbing may contain lead solder.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 11.37.
Who Supplies Your Water in Lake Zurich
With 3 utilities splitting service in Lake Zurich, IL, water accountability is distributed across 12 systems on the federal record.
Overview
We track water quality and home safety data for 1 ZIP code in Lake Zurich, Illinois (population ~44,100), covering 12 community water systems serving approximately 149,080 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Lake Zurich: C (57/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Lake Zurich water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0102 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Gross Beta | Radionuclides | 4 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 60047 | C | 4 | 0 | Lake Zurich |
All ZIP Codes in Lake Zurich
- 60047 [C] — 4 violations
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Lake Zurich
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Lake Zurich Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Lake Zurich
With 47% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Roughly balanced between older and newer construction, Lake Zurich shows a median build year of 1983 — a mid-range figure that places meaningful amounts of the residential inventory on both sides of the 1986 federal plumbing-solder ban.
Most homes in Lake Zurich were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Lake Zurich Homeowners
Because property values in Lake Zurich comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Lake Zurich are relatively low compared to home values. The $1,100–$3,400 estimated range is a small fraction of median property value. Home values are 177% above the Illinois average.
Lead Exposure Risk for Children in Lake Zurich
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Despite citywide averages serving as the standard public reference point, those aggregates cannot resolve what is happening at one specific faucet — and where 47% of Lake Zurich homes come from before the solder rule or where utility samples sit at or above the action mark, the gap between system data and faucet reality matters more than it does in lower-exposure communities. An in-home draw closes that gap, with certified filtration through retailer networks available where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Lake Zurich
Across the NFIP's long tracking period, Lake Zurich shows 32 claims and 100% of ZIP codes within FEMA-designated flood zones — figures that place it in moderate flood exposure territory. At this level, the water-quality implications of flooding — contaminated wells, stressed treatment intake, distribution backflow — move from theoretical edge cases to genuine periodic risks, particularly during higher-severity events.
Lake Zurich has a moderate flood history with 32 FEMA claims averaging $6,113 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,100</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Lake Zurich
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Gross Beta can reduce the most common contaminant found in Lake Zurich's water.
- Check your home's plumbing. With 47% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Lake Zurich, IL