Wallula, WA Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Monitoring data across Wallula reveals a persistent pattern of below-average compliance in WA — multiple service areas carry documented health violations, and the data has shown little overall improvement over recent EPA reporting cycles.
How Wallula Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Wallula Residents
- Homes built before 1986: 31% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 12.09 — above typical levels.
Wallula's Water Providers
With one provider handling most of Wallula's residential supply in WA, water service accountability is concentrated in a single utility among the 1 system on record.
Overview
We track water quality and home safety data for 1 ZIP code in Wallula, Washington (population ~127), covering 1 community water system serving approximately 480 people region-wide.
No EPA violations recorded across any ZIP codes in Wallula — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Wallula: 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
Wallula water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Wallula
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate 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 |
|---|---|---|---|
| 99363 | D | ARLENES ADDITION | 480 |
All ZIP Codes in Wallula
- 99363 [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.
Wallula Community Health Snapshot
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
Wallula Infrastructure Age
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
Wallula's residential inventory spans multiple construction eras, with the median build year of 2008 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.
A significant portion of Wallula's housing stock predates 1970, when lead pipes were commonly used. Residents in older homes should consider water testing.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Wallula
Placing remediation in the context of Wallula's property market, the equity share is low — most homeowners here are weighing a financial commitment that fits comfortably within routine property planning, far from the threshold where remediation becomes a material equity decision rather than a standard upkeep consideration.
Remediation costs in Wallula are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 56% below the Washington average.
Wallula: Lead Risk & Vulnerable Populations
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.
Households with kids in the home — for whom CDC guidance places particular weight on minimizing exposure — face a specific local picture in Wallula. 31% of homes here come from the pre-rule era, and aggregate utility samples either approach or cross 0.015 mg/L. A baseline draw-test kit and certified lead-removal filtration are available via retailer networks for households confirming conditions at a specific tap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Wallula
- 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 31% 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 Wallula, WA