Modesto, IL: 10 Health Violations — 56/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Safe water is the norm across most of Modesto, IL — but documented violations push the city to the middle safety tier.
How Modesto Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Modesto Residents
- Your city's water systems recorded 17 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Homes built before 1986: 75% — older plumbing may contain lead solder.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 14.31 — above typical levels.
Modesto's Water Providers
In Modesto, IL, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 4 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 1 ZIP code in Modesto, Illinois (population ~547), covering 4 community water systems serving approximately 2,291 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 10 health-based violations documented.
Home Safety Score
Average Home Safety Score for Modesto: 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
Modesto water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 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 |
|---|---|---|---|
| Fecal Coliform | Microbiological | 12 | 1 |
| Chlorite | Disinfection Byproducts | 8 | 1 |
| Lead and Copper Rule | Treatment Technique | 6 | 1 |
| Contaminant 1006 | Other | 2 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 62667 | C | 17 | 10 | Nilwood |
All ZIP Codes in Modesto
- 62667 [C] — 17 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.
Modesto 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 Modesto's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Modesto Infrastructure Age
With 75% 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
For residents trying to assess tap water risk in Modesto, the median build year of 1951 is the starting context. It signals that a majority of homes were constructed before 1986 — the year federal rules prohibited lead solder in new plumbing — and that a significant share likely predates 1970, when lead pipes were still a common choice for residential service connections. Neither risk tier is rare in this housing inventory.
Over half of homes in Modesto 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.
How Remediation Costs Compare in Modesto
In Modesto, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in Modesto are relatively low compared to home values. The $300–$2,300 estimated range is a small fraction of median property value. Home values are 15% below the Illinois average.
Modesto: 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.
If 75% of the Modesto inventory comes from before the federal ban on lead-bearing solder — and if utility samples sit at or near 0.015 mg/L — the gap between citywide averages and one specific faucet becomes a practical concern rather than a theoretical one. That is why one-home reads exist as a separate measurement. A certified filter through retailer networks addresses confirmed exposure where it appears in a household.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Modesto
- 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 Fecal Coliform can reduce the most common contaminant found in Modesto's water.
- Check your home's plumbing. With 75% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Modesto, IL