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