Tinley Park, IL: 6 Violations — 64/100 (2026)
2 ZIP codes · 7 water systems · Updated 2026-06-03
Tinley Park shows moderate tap water quality for IL — some areas carry documented EPA violations while others meet standards without issues.
How Tinley Park Compares
Data: EPA SDWIS Last verified: 2026-06-03
Tinley Park Water: The Quick Version
- Your city's water systems recorded 6 violations in the past 5 years.
- Homes built before 1986: 47% — older plumbing may contain lead solder.
- Estimated remediation: $1,850 per household.
- CDC health risk index: 11.18.
Water Systems Serving Tinley Park
Tinley Park, IL draws its residential water from 3 separate providers among the 7 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
Overview
We track water quality and home safety data for 2 ZIP codes in Tinley Park, Illinois (population ~62,274), covering 7 community water systems serving approximately 216,528 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Tinley Park: C (64/100)
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
Tinley Park water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Tinley Park
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 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 |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 3 | 2 |
| Stage 2 DBP Rule | Treatment Technique | 3 | 2 |
| Surface Water Treatment Rule | Treatment Technique | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 60477 | C | 3 | 0 | Tinley Park |
| 60487 | C | 3 | 0 | Tinley Park |
All ZIP Codes in Tinley Park
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 Tinley Park
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 Tinley Park
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Tinley Park's Housing Stock?
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
Tap water lead levels are shaped by two factors: what the utility delivers, and what the household plumbing adds to it. Older homes contribute disproportionately to that second variable because lead solder was standard in copper plumbing before 1986, and lead pipes were common before 1970. In Tinley Park, where the median build year is 1992, a substantial share of the housing stock falls into these older categories. The bar chart above breaks out the pre-1970, 1970-to-1986, and post-1986 segments — the key ages for understanding where plumbing-era risk concentrates across the city.
Most homes in Tinley Park 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.
Tinley Park: Remediation Cost in Perspective
Within the Tinley Park market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Tinley Park are relatively low compared to home values. The $950–$3,000 estimated range is a small fraction of median property value. Home values are 85% above the Illinois average.
Protecting Children from Lead in Tinley Park
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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 47% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Tinley Park.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Tinley Park
FEMA data shows 100% of Tinley Park's ZIP codes mapped into designated flood zones, paired with an NFIP record of 93 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.
Tinley Park has a moderate flood history with 93 FEMA claims averaging $1,542 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>$1,850</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 Tinley Park
- 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 Tinley Park'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 Tinley Park, IL