Colusa, IL: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Systems across Colusa show elevated violation counts against IL benchmarks — the low safety grade reflects that ongoing compliance pattern.
How Colusa Compares
Data: EPA SDWIS Last verified: 2026-06-03
Colusa Water: The Quick Version
- Estimated remediation: $1,200 per household.
- CDC health risk index: 14.63 — above typical levels.
Water Systems Serving Colusa
For most households in Colusa, IL, tap water comes from one provider — the utility that controls the local distribution system out of 1 tracked in federal record.
Overview
We track water quality and home safety data for 1 ZIP code in Colusa, Illinois, covering 1 community water system serving approximately 6,370 people.
No EPA violations recorded across any ZIP codes in Colusa — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Colusa: 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
Colusa water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Colusa
- 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 |
|---|---|---|---|
| 62329 | D | DALLAS RURAL WATER DISTRICT | 6,370 |
All ZIP Codes in Colusa
- 62329 [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 Colusa
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 You Can Do in Colusa
- 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. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- 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 Colusa, IL