Drinking Water Systems in MARIPOSA, California
5 water systems are reported for this city, with a combined service population of 3,695. The systems have 2 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving MARIPOSA
PONDEROSA BASIN MUTUAL WTR CO
798 served4 historical records1 recent
B
YOSEMITE WEST WATER SYSTEM
420 served6 historical records1 recent
B
MPWD-COULTERVILLE CSA 1
193 served5 historical records
A
MARIPOSA PINES MUTUAL
284 served0 historical records
A
MARIPOSA PUBLIC UTILITY DIST
2,000 served23 historical records
A
EPA Contaminant Categories in Historical Violation Records
Haloacetic Acids (HAA5)12 records
Coliform (TCR)8 records
Total Trihalomethanes (TTHMs)6 records
CARBON, TOTAL3 records
Lead and Copper Rule2 records
Radium-2281 record
Nitrate1 record
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.