Illinois City, IL: 5 Violations — 60/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Illinois City water quality is uneven — some service areas show clean compliance; others carry documented violations in IL EPA records.
How Illinois City Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Illinois City Water
- Your city's water systems recorded 5 violations in the past 5 years.
- Average lead level: 0.0008 mg/L.
- Homes built before 1986: 67% — older plumbing may contain lead solder.
- Estimated remediation: $2,400 per household.
- CDC health risk index: 13.87 — above typical levels.
Who Supplies Your Water in Illinois City
Because residential water in Illinois City, IL flows primarily through a single utility, infrastructure decisions, rate-setting, and EPA compliance are all managed within one organizational structure. Federal records show 1 system active in the area, but one provider dominates the service landscape for most homes and apartments.
Overview
We track water quality and home safety data for 1 ZIP code in Illinois City, Illinois, covering 1 community water system serving approximately 1,107 people.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Illinois City: C (60/100)
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
Illinois City water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0008 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)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 4 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 2 | 1 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 61259 | C | 5 | 0 | Chigakwa Park Estates |
All ZIP Codes in Illinois City
- 61259 [C] — 5 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 Illinois City
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 Illinois City Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Illinois City
With 67% 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
Because the majority of Illinois City's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1965 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Illinois City were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Illinois City Homeowners
The equity-to-remediation ratio in Illinois City is moderate — worth planning for but within reach for most property owners.
Remediation costs are moderate relative to home values in Illinois City. The estimated $1,600–$3,300 range is manageable for most homeowners but still worth budgeting for. Home values are 8% above the Illinois average.
Lead Exposure Risk for Children in Illinois City
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.
When older housing represents 67% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Illinois City address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Illinois City
Measured across the NFIP's multi-decade tracking period, Illinois City shows a moderate flood record — 24 claims and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Illinois City has a moderate flood history with 24 FEMA claims averaging $12,859 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>$2,400</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 Illinois City
- 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 Stage 1 DBP Rule can reduce the most common contaminant found in Illinois City's water.
- Check your home's plumbing. With 67% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Illinois City, IL