Holcomb, IL: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Public water data for Holcomb, IL shows a low safety grade — health-based violations appear across a meaningful share of service areas in current EPA records.
How Holcomb Compares
Data: EPA SDWIS Last verified: 2026-06-03
Holcomb Water: The Quick Version
- Homes built before 1986: 90% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 13.85 — above typical levels.
Water Systems Serving Holcomb
Because residential water in Holcomb, 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 Holcomb, Illinois (population ~166), covering 1 community water system serving approximately 2,344 people region-wide.
No EPA violations recorded across any ZIP codes in Holcomb — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Holcomb: D (40/100)
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
Holcomb water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Holcomb
- 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.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 61043 | D | DAVIS JUNCTION | 2,344 |
All ZIP Codes in Holcomb
- 61043 [D]
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 Holcomb
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
How Old Is Holcomb's Housing Stock?
With 90% 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
Lead solder was standard in copper plumbing until federally banned in 1986; lead pipes were common in service lines pre-1970. Holcomb's median build year of 1902 reflects a housing stock where these older materials are a pervasive feature — not a rare legacy — of the residential plumbing landscape.
Over half of homes in Holcomb 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.
Holcomb: Remediation Cost in Perspective
Equity impact data for Holcomb lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Holcomb are relatively low compared to home values. The $800–$1,500 estimated range is a small fraction of median property value. Home values are 33% below the Illinois average.
Protecting Children from Lead in Holcomb
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.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 90% of the Holcomb inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Holcomb
- 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. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 90% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Holcomb, IL