Hillside, CO: High Radon Risk — 40/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Compared to CO averages, Hillside scores below the baseline — health violations appear more frequently than the norm and the city's grade reflects that ongoing shortfall.
How Hillside Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Hillside Water
- Estimated remediation: $1,200 per household.
- CDC health risk index: 13.01 — above typical levels.
Who Supplies Your Water in Hillside
In Hillside, CO, the drinking water supply is organized under a single dominant utility — a consolidated structure that shapes how infrastructure investment, regulatory compliance, and rate decisions flow to households. When one provider handles the overwhelming share of residential connections out of 1 tracked system, accountability is clear: service upgrades, EPA violation responses, and tariff changes all funnel through that single organizational structure.
Overview
We track water quality and home safety data for 1 ZIP code in Hillside, Colorado, covering 1 community water system serving approximately 1,950 people.
No EPA violations recorded across any ZIP codes in Hillside — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Hillside: 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
Hillside water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Hillside
- 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 |
|---|---|---|---|
| 81232 | D | ROUND MOUNTAIN WSD | 1,950 |
All ZIP Codes in Hillside
- 81232 [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.
Health Outcomes in Hillside
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
Housing & Infrastructure in Hillside
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Hillside has a newer housing profile — median build year 2005, placing most homes after the 1986 lead-solder ban.
Most homes in Hillside 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.
What You Can Do in Hillside
- 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 Hillside, CO