Local water quality
Water quality in Castle Rock, Washington
1 public water system · EPA data
The bottom line
EPA records for the water serving Castle Rock, Washington show Copper, Lead. A filter independently certified to reduce those exact contaminants is the most direct fix.
What's in Castle Rock's water
Contaminants EPA has recorded across Castle Rock's water systems, and how many certified filters remove each.
The water system serving Castle Rock
Open a system for its full report — measured levels vs. federal limits, PFAS, and the certified filters that remove each contaminant.
Filter your Castle Rock water
Match a certified filter to what's actually in your water — a filter certified for lead may do nothing for PFAS or fluoride.