Rock Island, IL: 15 Violations — 56/100 (2026)
3 ZIP codes · 5 water systems · Updated 2026-06-03
Compliance figures for Rock Island indicate average water quality in IL overall — some service areas have recorded health-based violations in recent monitoring cycles, while others operate cleanly, making system-level data the most actionable reference point for residents.
How Rock Island Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Rock Island Residents
- Your city's water systems recorded 15 violations in the past 5 years.
- Average lead level: 0.006 mg/L.
- Estimated remediation: $1,967 per household.
- CDC health risk index: 13.58 — above typical levels.
Rock Island's Water Providers
Federal records list 5 water systems tied to Rock Island, IL. Of those, 3 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
Overview
We track water quality and home safety data for 3 ZIP codes in Rock Island, Illinois (population ~37,294), covering 5 community water systems serving approximately 97,447 people region-wide.
3 of 3 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Rock Island: C (56/100)
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
Rock Island water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0060 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 3 ZIP codes
- Zone 2 (Moderate): 0 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 |
|---|---|---|---|
| Lead | Inorganic | 4 | 3 |
| Contaminant 2020 | Other | 4 | 3 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 4 | 3 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 3 |
| Surface Water Treatment Rule | Treatment Technique | 4 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 61201 | D | 5 | 0 | Rock Island |
| 61204 | C | 5 | 0 | Rock Island |
| 61299 | C | 5 | 0 | Rock Island |
All ZIP Codes in Rock Island
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.
Rock Island Community Health Snapshot
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
What's in Rock Island's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Rock Island
Looking at how documented remediation costs fit within Rock Island property values, the equity share lands in the moderate tier — a finding that positions the household financial perspective between routine maintenance and a significant budget commitment, where most homeowners can successfully address documented issues by treating the expense as a planned financial priority rather than an unexpected one.
Remediation costs are moderate relative to home values in Rock Island. The estimated $1,300–$2,633 range is manageable for most homeowners but still worth budgeting for. Home values are 36% below the Illinois average.
Rock Island: Lead Risk & Vulnerable Populations
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 Rock Island 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.
Rock Island: Flood History & Water Damage Risk
55 FEMA flood insurance claims are on file for Rock Island, and 33% of local ZIP codes fall within federally designated flood zones — enough to put flood exposure on the planning radar, though short of the concentrated-risk threshold where treatment-system vulnerability becomes a primary consideration.
Rock Island has a moderate flood history with 55 FEMA claims averaging $12,879 per payout. 33% 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>$1,967</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 Rock Island
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Lead can reduce the most common contaminant found in Rock Island's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Rock Island, IL