North Bonneville, WA: High Radon Risk — 70/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-04
Tap water monitoring data for North Bonneville shows a consistently clean picture in WA — few violations on record, compliance well above the median.
How North Bonneville Compares
Data: EPA SDWIS Last verified: 2026-06-04
North Bonneville Water: The Quick Version
- Average lead level: 0.0031 mg/L.
- Homes built before 1986: 38% — older plumbing may contain lead solder.
- Estimated remediation: $3,700 per household.
- CDC health risk index: 13.11 — above typical levels.
Water Systems Serving North Bonneville
A single dominant system supplies most of North Bonneville, WA. That utility controls infrastructure decisions, rate structures, and EPA compliance reporting for most residential addresses served across those 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in North Bonneville, Washington, covering 1 community water system serving approximately 1,151 people.
No EPA violations recorded across any ZIP codes in North Bonneville — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for North Bonneville: B (70/100)
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
North Bonneville water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0031 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| 98639 | B | City of North Bonneville | 1,048 |
All ZIP Codes in North Bonneville
- 98639 [B]
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 North Bonneville
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 North Bonneville's Housing Stock?
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
Housing age is a practical proxy for plumbing risk because federal standards changed in 1986, when lead solder was banned from new residential construction, and again earlier — before 1970, lead pipes were themselves commonly installed. North Bonneville's median build year of 1996 sits in the range where both pre- and post-1986 homes are well represented. The bar chart above reflects that mixed picture: the distribution captures pockets of older housing alongside more recent development, and those pockets carry real lead risk potential at the individual property level.
Most homes in North Bonneville 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.
North Bonneville: Remediation Cost in Perspective
Given current North Bonneville valuations, the remediation-to-property-value ratio is low — most homeowners are looking at a proportionally modest share that fits within routine financial planning.
Remediation costs in North Bonneville are relatively low compared to home values. The $2,600–$5,500 estimated range is a small fraction of median property value. Home values are 19% below the Washington average.
Protecting Children from Lead in North Bonneville
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 38% of the North Bonneville 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.
Climate-Related Water Risk for North Bonneville
Measured across the NFIP's multi-decade tracking period, North Bonneville shows a moderate flood record — 1 claim and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
North Bonneville has a moderate flood history with 1 FEMA claims averaging $100,096 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>$3,700</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.
Deep Dive Reports
Detailed analysis for North Bonneville, WA