Utilities in California
18,760 systems (SDWIS/Fed snapshot). Search or browse pages — open any row for PFAS monitoring, violation counts, and filter recommendations.
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MAGNOLIA UNION SCHOOL
CA1300553 · 142 served
MAHALEY CREEK WATER SYSTEM
CA4510304 · 25 served
MAHANES WATER SYSTEM
CA5400609 · 50 served
MAHER MUTUAL WATER COMPANY
CA1500378 · 140 served
MAHER RD WS #05
CA2700638 · 48 served
MAHER ROAD WATER SYSTEM #2
CA2700635 · 25 served
MAHER ROAD WATER SYSTEM #4
CA2700637 · 28 served
MAHONEY S TRAILER PARK
CA3301409 · 207 served
MAIF - MARSHALL AQUA IMPROVEMENT FORUM
CA2100585 · 50 served
MAIN STREET PRODUCE
CA4200974 · 45 served
MAINLAND NURSERY INC
CA3901196 · 0 served
MAINTENANCE DISTRICT
CA3900992 · 110 served
MAJESTIC MOUNTAIN RESORT
CA3100051 · 40 served
MAJESTIC PINES COMMUNITY SD
CA3710041 · 1,768 served
MAJESTIC TOWNSGATE WATER SYSTEM
CA4200718 · 200 served
MAJOR FARMS
CA2701044 · 25 served
MAJOR VISTA WATER
CA5700614 · 282 served
MALAGA COUNTY WATER DISTRICT
CA1010042 · 5,979 served
MALAGA SCHOOL
CA1000404 · 285 served
MALAKOFF DIGGINS SHP
CA2910300 · 125 served
MALAKOFF STATE HISTORIC PARK
CA2900583 · 25 served
MALE VILLAGE
CA1502340 · 48 served
MALIBU CONSERVATION CAMP
CA7300135 · 120 served
MALIBU CONSERVATION CAMP# 13
CA1900994 · 480 served
MALL WATER SYSTEM
CA0800617 · 25 served
MALLARD LAKE GOLF COURSE, INC.
CA5100126 · 75 served
MALLO GOLD MINE PLAZA
CA0300448 · 25 served
MALLORY CANYON WATER SYSTEM #2
CA2701137 · 26 served
MAMA MARCINA S
CA5400986 · 46 served
MAMMOTH CWD
CA2610001 · 8,234 served
MAMMOTH LAKES BASIN
CA2600729 · 1,000 served
MAMMOTH MOUNTAIN SKI AREA - OUTPOST 14
CA2600624 · 7,736 served
MAMMOTH ORANGE
CA2000615 · 50 served
MAMMOTH POOL CAMPGROUND
CA2000518 · 225 served
MAMMOTH POOL MOBILE HOME PARK
CA2000589 · 30 served
MAMMOTH SHERIFF SUBSTATION 3
CA2600516 · 25 served
MAMMOTH YOSEMITE AIRPORT
CA2600577 · 13 served
MANANA WOODS
CA4400539 · 350 served
MANCHESTER BEACH KOA
CA2300642 · 273 served
MANCHESTER MOBILE HOME PARK
CA2400005 · 45 served
Manchester Rancheria
090600139 · 100 served
MANCHESTER UNION ELEMENTARY SCHOOL
CA2300826 · 75 served
MANDALA WATER SYSTEM
CA1700650 · 212 served
MANEY GERMAN
CA4800667 · 14 served
MANGUS WATER SYSTEM
CA1502632 · 25 served
MANHATTAN BEACH-CITY, WATER DEPT.
CA1910083 · 32,697 served
MANHEIM CENTRAL CALIFORNIA
CA1000598 · 85 served
MANILA COMMUNITY SERVICES DIST.
CA1210017 · 750 served
Manley s Resort
CA2801021 · 75 served
MANNA PRO CORP - INACTIVE
CA3900728 · 46 served