Browse Water Systems

19,626 public water systems in CA.

Public Water Systems Database

Browse 19,626 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

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System Name PWSID State Type Population Served
OROSI HIGH SCHOOL CA5400636 California Non-Transient Non-Community 1,200
HOLLISTER HILLS-SHEEP SPRINGS CA3510303 California Transient Non-Community 1,200
USMC/MTN WARFARE TRNG CTR - BRIDGEPORT CA2610700 California Community 1,200
TUSD - TEHACHAPI HIGH SCHOOL CA1500592 California Non-Transient Non-Community 1,200
SIERRA ARMY DEPOT CA1810700 California Non-Transient Non-Community 1,200
NPS PRNS - GLEN AND WILDCAT CAMPGROUNDS CA2110503 California Transient Non-Community 1,200
DEFENSE DISTRIB. DEPOT - TRACY SITE CA3910702 California Non-Transient Non-Community 1,200
ALPAUGH IRRIGATION DISTRICT CA5400501 California Community 1,200
TNF-LOGGER & STAMPEDE RC CA4600068 California Transient Non-Community 1,200
SHANT BHAVAN PUNJABI FUNERAL HOME CA1000592 California Transient Non-Community 1,200
CA5100505 California Community 1,200
SLOCSA #10A - CAYUCOS CA4010901 California Community 1,200
GRIMMWAY ENTERPRISES-MALAGA WATER SYSTEM CA1503093 California Non-Transient Non-Community 1,200
DURHAM UNIFIED SCHOOL DISTRICT CA0400066 California Non-Transient Non-Community 1,200
STARBUCKS CA3902217 California Transient Non-Community 1,200
RESERVE AT SPANOS PARK, THE CA3901362 California Transient Non-Community 1,200
LAKE YOSEMITE COUNTY PARK CA2400114 California Transient Non-Community 1,200
GERBER LAS FLORES CSD CA5210002 California Community 1,200
PATTON STATE HOSPITAL CA7300207 California Community 1,200
WEST HOOPA VALLY SYSTEM 090600123 California Community 1,200
VALLEY EVANGELICAL FREE CHURCH CA4800809 California Transient Non-Community 1,200
STOCKTON DEVELOPMENTAL CENTER CA7300211 California Community 1,200
DEPT OF MENTAL HEALTH CA0000207 California Community 1,200
HOMETOWN MEADOW GLEN TX2200288 California Community 1,197
CALIFORNIA INSTITUTION FOR WOMEN CA3610851 California Community 1,195
LIMONEIRA RANCH #1 CA5601201 California Community 1,187
MC CLOUD BRIDGE NRAS CA4500048 California Transient Non-Community 1,180
MT. HERMON ASSOCIATION, INC. CA4410008 California Community 1,176
MAXWELL PUBLIC UTILITY DISTRICT CA0610003 California Community 1,175
CAL AM - WEST SAN MARTIN CA4300543 California Community 1,173
FAIROAKS PWS #44 CA3901348 California Community 1,172
BLUE LAKE, CITY OF CA1210002 California Community 1,172
Barona North 090600118 California Community 1,171
CAMP MEEKER WATER SYSTEM CA4910029 California Community 1,171
SUNSET VISTA WATER COMPANY CA5410023 California Community 1,170
PHOENIX LAKE ESTATES CC MWC CA5510026 California Community 1,168
OLYMPIC VALLEY PSD CA3110020 California Community 1,165
YOSEMITE NPS-BRIDALVEIL FALL CA2210519 California Transient Non-Community 1,163
SEA RANCH WATER COMPANY,THE (PUC) CA4910007 California Community 1,160
DEL ORO WATER CO.-LIME SADDLE CA0410017 California Community 1,158
SONORA WATER RESOURCES, INC CA5510024 California Community 1,154
CSP- KIRKWOOD ENTRANCE CA4410308 California Transient Non-Community 1,154
LAYTONVILLE COUNTY WATER DISTRICT CA2310011 California Community 1,152
LATON COMMUNITY SERVICES DISTRICT CA1010020 California Community 1,151
NAPA-BERRYESSA RESORT CA2800535 California Community 1,150
SPANISH FLAT RESORT CA2800597 California Community 1,150
BELLFLOWER HIGH SCHOOL CA1900044 California Non-Transient Non-Community 1,150
VICTORIAN FARMHOUSE CA2300742 California Transient Non-Community 1,145
PINE GROVE COMM SERV DIST CA0310005 California Community 1,141
CAL AM WATER COMPANY - CHUALAR CA2701202 California Community 1,139