Copalis Crossing, WA Water Safety: 66/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Drilling into federal monitoring figures for Copalis Crossing in WA, the pattern is middle-of-the-road — some utilities have documented MCL exceedances or treatment technique violations in recent years, while others have operated without a single flag, making the city's grade a genuine average rather than a rounded-down high.
How Copalis Crossing Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Systems Serving Copalis Crossing
Federal records list 3 water systems tied to Copalis Crossing, WA. Of those, 3 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
Overview
We track water quality and home safety data for 1 ZIP code in Copalis Crossing, Washington (population ~28), covering 3 community water systems serving approximately 3,904 people region-wide.
No EPA violations recorded across any ZIP codes in Copalis Crossing — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Copalis Crossing: C (66/100)
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
Copalis Crossing water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Copalis Crossing
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 98536 | C | Pacific Beach/moclips | 2,372 |
All ZIP Codes in Copalis Crossing
- 98536 [C]
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 Copalis Crossing
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 Copalis Crossing
- 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.
Deep Dive Reports
Detailed analysis for Copalis Crossing, WA