Drinking Water Systems in SAN MARCOS, California
2 water systems are reported for this city, with a combined service population of 113,596. The systems have 33 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving SAN MARCOS
EPA Contaminant Categories in Historical Violation Records
Fluoride40 records
Nitrate12 records
Coliform (TCR)3 records
Gross Alpha2 records
Lead and Copper Rule1 record
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.