Island Park, ID: High Radon Risk — 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-04
Systems across Island Park show elevated violation counts against ID benchmarks — the low safety grade reflects that ongoing compliance pattern.
How Island Park Compares
Data: EPA SDWIS Last verified: 2026-06-04
What You Should Know About Island Park Water
- Homes built before 1986: 49% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 12.15 — above typical levels.
Who Supplies Your Water in Island Park
One utility dominates residential water service in Island Park, ID — out of 1 system in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Island Park, Idaho (population ~742), covering 1 community water system serving approximately 1,129 people region-wide.
No EPA violations recorded across any ZIP codes in Island Park — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Island Park: D (53/100)
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
Island Park water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Island Park
- 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 |
|---|---|---|---|
| 83429 | D | ASHTON CITY OF | 1,129 |
All ZIP Codes in Island Park
- 83429 [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 Island 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
Housing & Infrastructure in Island Park
With 49% 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
Island Park's residential inventory spans multiple construction eras, with the median build year of 1983 landing in a zone where pre- and post-1986 homes are both well represented. That split matters because homes built before 1986 may contain lead-soldered copper joints — a plumbing practice banned that year — while those built before 1970 face the additional possibility of lead pipes in the service line. Whether a specific household sits on the older or newer end of this distribution is the primary variable shaping its individual exposure risk.
Most homes in Island 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.
Cost Context: What Remediation Means for Island Park Homeowners
In Island Park, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Island Park are relatively low compared to home values. The $2,000–$4,000 estimated range is a small fraction of median property value. Home values are 42% above the Idaho average.
Lead Exposure Risk for Children in Island 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.
Locally, 49% of Island Park homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Island Park
Although Island Park's flood history doesn't reach high-severity thresholds, NFIP data documents 2 claims and FEMA maps place 100% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Island Park has a moderate flood history with 2 FEMA claims averaging $20,252 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>$3,000</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 Island 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. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 49% 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 Island Park, ID