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
ROYAL MOUNTAIN KING MINE CA0500018 California Non-Transient Non-Community 110
CHISAN ORCHIDS NURSERY CA4200963 California Transient Non-Community 110
HALCYON WATER SYSTEM CA4000501 California Community 110
ADKINS HILL MHP OK2004706 California Community 110
KAMP KLAMATH CORP. CA0800635 California Transient Non-Community 110
LAKESIDE MOBILE HOME & RV PARK OR4100450 California Community 110
MORENA CONSERVATION CAMP CA0000411 California Community 110
BOSTON RANCH J G VOSWELL CO CA1600027 California Community 110
YOSEMITE FORKS EST MUTUAL CA2000527 California Community 110
SAN JOAQUIN FAIR - 2ND DISTRICT CA3910302 California Transient Non-Community 110
PLACER CWA - BIANCHI ESTATES CA3110040 California Community 110
THREE SPRINGS RANCH MUTUAL WATER COMPANY CA4300770 California Community 110
CASTROVILLE HOLDING CO CA2700570 California Transient Non-Community 110
DUCK ISLAND RV PARK CA3400374 California Transient Non-Community 110
SIERRA KNOLLS WINERY WATER SYSTEM CA2901530 California Transient Non-Community 110
ALTMAN PLANTS WS #03 - ESPINOSA 303 CA2700850 California Non-Transient Non-Community 110
YOSEMITE ALPINE VILLAGE CA2200015 California Community 110
DEL RIO EAST HOA WATER SYSTEM CA5000099 California Community 110
PAUL OLIVETE CA2700902 California Community 110
MISSION FARM R.V. PARK CA3500556 California Community 110
SANTA CRUZ KOA CAMPGROUNDS CA4400774 California Transient Non-Community 110
RUSSOS MOBILE PARK CA0707601 California Community 110
WOODBRIDGE MOBILE ESTATES CA3900721 California Community 110
Los Molinos High School CA5200594 California Non-Transient Non-Community 110
SAF-T-CAB CA1000399 California Non-Transient Non-Community 110
SOULTS MUTUAL WATER COMPANY CA5400805 California Community 110
CDF-CHAMBERLAIN CREEK CONSERVATION CAMP CA2310801 California Non-Transient Non-Community 110
ONE HOPE WINERY CA2800068 California Transient Non-Community 110
CANON MANOR WATER COMPANY CA4900593 California Community 110
MORENA CONSERVATION CAMP CA7300411 California Community 110
BTQC-ESCALON CA3900796 California Non-Transient Non-Community 110
RUTHERFORD HILL WINERY CA2801084 California Non-Transient Non-Community 110
CAMP OWEN WATER SYSTEM CA1502315 California Community 110
MAINTENANCE DISTRICT CA3900992 California Community 110
KONOCTI CONSERVATION CAMP CA0000104 California Community 109
NAGGIAR VINEYARDS CA2900112 California Transient Non-Community 109
PODESTA PACKING WATER SYSTEM CA3901445 California Transient Non-Community 109
VIRGINIA ACRES WATER COMPANY CA2700798 California Community 109
OAK GROVE MOBILE HOME PARK CA1900537 California Community 109
ARROWHEAD COOPERATIVE COMPANY CA4300504 California Community 109
SUNRISE MUTUAL WATER CO. CA5400881 California Community 109
FCPG/LOST LAKE RECREATION AREA CA1000097 California Transient Non-Community 109
CARLON CAMPGROUND CA5500032 California Transient Non-Community 109
SHASTA CO CSA # 13 ALPINE MEADOWS CA4500314 California Community 109
Oasis at Havasu Palms 090600201 California Transient Non-Community 109
GURUDWARA GURU NANAK SAHIB CA5000507 California Transient Non-Community 109
SAINTSBURY WINERY CA2800077 California Transient Non-Community 109
SYKES WATER CO. CA4200552 California Community 109
KONOCTI CONSERVATION CAMP CA7300104 California Community 109
THE RANCH AT LIVE OAK CA5602302 California Non-Transient Non-Community 109