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