Carol Stream, IL: 16 Violations — 76/100 (2026)
8 ZIP codes · 8 water systems · Updated 2026-06-03
Looking at federal monitoring data for Carol Stream, IL: the city clears benchmarks set under the Safe Drinking Water Act with room to spare — recorded exceedances are rare, and the systems serving local households have not triggered any pattern of repeat deficiencies in recent cycles.
How Carol Stream Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Carol Stream, IL
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Carol Stream.
Carol Stream Water: The Quick Version
- Your city's water systems recorded 16 violations in the past 5 years.
- Average lead level: 0.0009 mg/L.
- Estimated remediation: $838 per household.
- CDC health risk index: 11.25.
Water Systems Serving Carol Stream
Residential water service in Carol Stream, IL is divided among 3 separate utilities, drawn from 8 systems on file with federal regulators.
Overview
We track water quality and home safety data for 8 ZIP codes in Carol Stream, Illinois (population ~42,087), covering 8 community water systems serving approximately 244,975 people region-wide.
8 of 8 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Carol Stream: B (76/100)
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
Carol Stream water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0009 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)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 6 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 9 | 8 |
| Revised Total Coliform Rule | Microbiological | 9 | 8 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 60116 | B | 2 | 0 | Carol Stream |
| 60122 | C | 2 | 0 | Carol Stream |
| 60125 | C | 2 | 0 | Carol Stream |
| 60128 | B | 2 | 0 | Carol Stream |
| 60132 | B | 2 | 0 | Carol Stream |
| 60188 | B | 2 | 0 | Carol Stream |
| 60197 | B | 2 | 0 | Carol Stream |
| 60199 | B | 2 | 0 | Carol Stream |
All ZIP Codes in Carol Stream
- 60116 [B] — 2 violations
- 60122 [C] — 2 violations
- 60125 [C] — 2 violations
- 60128 [B] — 2 violations
- 60132 [B] — 2 violations
- 60188 [B] — 2 violations
- 60197 [B] — 2 violations
- 60199 [B] — 2 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.
CDC Health Data for Carol Stream
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
Key Contaminants Detected in Carol Stream
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Carol Stream: Remediation Cost in Perspective
In Carol Stream, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Carol Stream are relatively low compared to home values. The $288–$1,438 estimated range is a small fraction of median property value. Home values are 69% above the Illinois average.
Protecting Children from Lead in Carol Stream
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.
Lead risk in Carol Stream appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Carol Stream
Although Carol Stream's flood history doesn't reach high-severity thresholds, NFIP data documents 143 claims and FEMA maps place 25% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Carol Stream has a moderate flood history with 143 FEMA claims averaging $15,393 per payout. 25% 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>$838</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.
Deep Dive Reports
Detailed analysis for Carol Stream, IL