Drinking Water Systems in SONOMA, California
5 water systems are reported for this city, with a combined service population of 13,254. The systems have 0 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving SONOMA
MISSION HIGHLANDS MUTUAL WATER CO.
150 served6 historical records
A
DIAMOND A MUTUAL WATER COMPANY
640 served7 historical records
A
EDDY DRIVE
48 served0 historical records
A
SONOMA, CITY OF
11,725 served2 historical records
A
MOON VALLEY WATER SYSTEM
691 served0 historical records
A
EPA Contaminant Categories in Historical Violation Records
Gross Alpha4 records
Total Trihalomethanes (TTHMs)2 records
Coliform (TCR)1 record
Arsenic1 record
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.