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Hide/show columns: Water System No. | Water System Name |
Type | Distribution System Class | Max Treatment Plant Class |
Principal County Served | Primary Source Water Type |
| Water System No. | Water System Name | Type | Distribution System Class | Max Treatment Plant Class | Principal County Served | Primary Source Water Type |
|---|---|---|---|---|---|---|
| Water System No. | Water System Name | Type | Distribution System Class | Max Treatment Plant Class | Principal County Served | Primary Source Water Type |
| CA1900045 | 1000 TRAILS / SOLEDAD CANYON PRESERVE | NC | D1 | T3 | LOS ANGELES | GW |
| CA1900904 | ACTON CONSERVATION CAMP #11 | NTNC | D1 | T1 | LOS ANGELES | GU |
| CA1900894 | ACTON FOUR SQUARE CHURCH | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900092 | ACTON LA NORTH KOA | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1907004 | ACTON-AGUA DULCE LDS CHURCH | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900768 | AGUA DULCE WATER SYSTEM | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1909646 | AGUA DULCE WINERY | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900061 | AGUA DULCE WOMEN'S CLUB | NC | D2 | There are no treatment plants | LOS ANGELES | GW |
| CA1900942 | ALPINE SPRINGS MOBILE HOME PARK | C | D1 | T2 | LOS ANGELES | GW |
| CA1910002 | AMARILLO MUTUAL WATER COMPANY | C | D2 | TD | LOS ANGELES | GW |
| CA1900744 | ANCHOR RETREAT CENTER | NC | D1 | T1 | LOS ANGELES | GW |
| CA1900552 | ANGELES CREST CHRISTIAN CAMP | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900761 | ANGELES SHOOTING RANGES | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900794 | ANTELOPE PARK MUTUAL WATER COMPANY | C | D1 | T1 | LOS ANGELES | GW |
| CA1909647 | ANTELOPE VALLEY AIRPORT EXPRESS | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910045 | ANTELOPE VALLEY EAST KERN WATER AGENCY | C | D4 | T5 | LOS ANGELES | SW |
| CA1910301 | ANTELOPE VALLEY INDIAN MUSEUM STATE PARK | NC | D1 | T1 | LOS ANGELES | GW |
| CA1910303 | ANTELOPE VALLEY POPPY RESERVE STATE PARK | NC | D1 | T2 | LOS ANGELES | SW |
| CA1900936 | AQUA J. MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1990013 | AVALON, CITY OF | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910023 | AVERYDALE MWC | C | D2 | T1 | LOS ANGELES | GW |
| CA1910007 | AZUSA LIGHT AND WATER | C | D5 | T4 | LOS ANGELES | SW |
| CA1910013 | BELLFLOWER - SOMERSET MWC | C | D3 | T1 | LOS ANGELES | SWP |
| CA1910012 | BELLFLOWER HOME GARDEN WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910018 | BELLFLOWER MUNICIPAL WATER SYSTEM | C | D2 | Missing treatment classification in SDWIS | LOS ANGELES | SWP |
| CA1910156 | BEVERLY HILLS-CITY, WATER DEPT. | C | D4 | T4 | LOS ANGELES | SWP |
| CA1900075 | BLEICH FLATS MUTUAL | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900055 | BLUE SKIES TRAILOR PARK | C | D1 | T2 | LOS ANGELES | GW |
| CA1995003 | BURBANK, CITY OF - RECLAMATION | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910179 | BURBANK-CITY, WATER DEPT. | C | D5 | T4 | LOS ANGELES | SWP |
| CA1990012 | CAL POLY, POMONA | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910186 | CAL-AM WATER COMPANY - DUARTE | C | D4 | TD | LOS ANGELES | GW |
| CA1910020 | CAL-AM WATER COMPANY - EAST PASADENA | C | D2 | TD | LOS ANGELES | GW |
| CA1910052 | CAL/AM WATER COMPANY - BALDWIN HILLS | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910139 | CAL/AM WATER COMPANY - SAN MARINO | C | D4 | T2 | LOS ANGELES | SWP |
| CA1900975 | CALI LAKE RV RESORT | C | D1 | T2 | LOS ANGELES | GW |
| CA1910022 | CALIF STATE POLYTECHNICAL UNIV - POMONA | C | D4 | T3 | LOS ANGELES | SW |
| CA1900007 | CALIFORNIA CONSERVATION CAMP #14 | C | D1 | T2 | LOS ANGELES | GU |
| CA1910199 | CALIFORNIA DOMESTIC WATER COMPANY | C | D4 | T5 | LOS ANGELES | GW |
| CA1910242 | CALIFORNIA WATER SERVICE CO-LAKE HUGHES | C | D2 | T2 | LOS ANGELES | GW |
| CA1910243 | CALIFORNIA WATER SERVICE CO-LEONA VALLEY | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910033 | CALIFORNIA WATER SERVICE CO. - DOMINGUEZ | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910036 | CALIFORNIA WATER SERVICE CO. - ELA | C | D5 | T3 | LOS ANGELES | SWP |
| CA1910134 | CALIFORNIA WATER SERVICE CO. - HERM/REDO | C | D5 | T1 | LOS ANGELES | SWP |
| CA1910104 | CALIFORNIA WATER SERVICE CO. - PALOS VER | C | D5 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910010 | CALIFORNIA WATER SERVICE CO.-LANCASTER | C | D2 | TD | LOS ANGELES | SWP |
| CA1900843 | CALIFORNIAN MOBILE HOME PARK | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900080 | CAMP ELK | NC | D1 | T1 | LOS ANGELES | GW |
| CA1900603 | CAMP JOSEPHO-BSA WATER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900011 | CAMP SCOTT AND SCUDDER | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1900594 | CAMP VERDUGO OAKS BOYSCOUTS | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900529 | CAMP WILLIAMS-RESORT WATER | C | D1 | T1 | LOS ANGELES | GW |
| CA1900089 | CAMPS MUNZ AND MENDENHALL | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1900162 | CANYON CREEK SPORTS COMPLEX | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900717 | CASA DULCE ESTATES | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1990017 | CASTAIC LAKE WATER AGENCY | NP | There are no treatment plants | LOS ANGELES | ||
| CA1995000 | CENTRAL BASIN MUNICIPAL WATER DISTRICT | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910019 | CERRITOS - CITY, WATER DEPT. | C | D5 | T2 | LOS ANGELES | SWP |
| CA1995005 | CERRITOS, CITY OF | NP | There are no treatment plants | LOS ANGELES | ||
| CA1995019 | CITY OF SANTA CLARITA | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910001 | CITY OF ALHAMBRA | C | D4 | T3 | LOS ANGELES | SWP |
| CA1910003 | CITY OF ARCADIA | C | D4 | T3 | LOS ANGELES | GW |
| CA1910108 | CITY OF BELL GARDENS | C | D2 | T2 | LOS ANGELES | SWP |
| CA1990023 | CITY OF DOWNEY | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910029 | CITY OF INDUSTRY WATERWORKS SYSTEMS | C | D2 | Operator is not required | LOS ANGELES | GW |
| CA1990006 | CITY OF LOS ANGELES. DWP | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990028 | CITY OF LYNWOOD | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990025 | CITY OF MALIBU | NP | There are no treatment plants | LOS ANGELES | ||
| CA1995014 | CITY OF PALMDALE (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910154 | CITY OF SOUTH PASADENA | C | D4 | T3 | LOS ANGELES | SWP |
| CA1995006 | CITY OF TORRANCE | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900527 | CLEAR CREEK OUTDOOR EDUCATION CENTER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900817 | CLEAR SKIES MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1900612 | COLBY RANCH-UNITED METHODIST CAMP | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900952 | COLDBROOK CAMPGROUND | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900801 | COLORADO MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910050 | COMMERCE-CITY, WATER DEPT. | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910026 | COMPTON-CITY, WATER DEPT. | C | D4 | TD | LOS ANGELES | SWP |
| CA1910128 | COVINA IRRIGATING CO. | C | D4 | T4 | LOS ANGELES | SW |
| CA1910127 | COVINA-CITY, WATER DEPT. | C | D4 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910028 | CRESCENTA VALLEY CWD | C | D4 | T3 | LOS ANGELES | SWP |
| CA1900130 | DEL RIO MUTUAL | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900304 | DEL SUR GARDENS TRAILER PARK | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900750 | DEL SUR SCHOOL/WESTSIDE UNION DISTRICT | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1990030 | DESCANSO GARDENS GUILD WWTP | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900143 | DESERT AIRE GOLF COURSE | NC | D1 | T2 | LOS ANGELES | GW |
| CA1900693 | DESERT PALMS MOBILE HOME PARK | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910034 | DOWNEY - CITY, WATER DEPT. | C | D4 | There are no treatment plants | LOS ANGELES | GW |
| CA1910604 | DWR. VISTA DEL LAGO VISITOR CTR,VAQUERRO | NC | NR | T2 | LOS ANGELES | SW |
| CA1900751 | EASTSIDE UNION SCHOOL DISTRICT | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1900803 | EL DORADO MUTUAL WATER CO. | C | D1 | T2 | LOS ANGELES | SWP |
| CA1910038 | EL MONTE-CITY, WATER DEPT. | C | D3 | T2 | LOS ANGELES | GW |
| CA1900636 | EL RANCHO MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1910040 | EL SEGUNDO-CITY, WATER DEPT. | C | D3 | There are no treatment plants | LOS ANGELES | SWP |
| CA1900804 | EVERGREEN MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910801 | FENNER CANYON YOUTH CONSERVATION CAMP | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900901 | FIRE SUPPRESSION CAMP #19 | C | D1 | T2 | LOS ANGELES | GU |
| CA1907011 | FLYING J TRAVEL CENTER | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910032 | FOOTHILL MUNICIPAL WATER DIST. | C | D4 | There are no treatment plants | LOS ANGELES | SWP |
| CA1995017 | FOOTHILL MWD (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1901000 | GENERAL ATOMICS AERONAUTICAL - GRAY BUTT | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1990008 | GLENDALE, CITY OF | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910043 | GLENDALE-CITY, WATER DEPT. | C | D5 | T5 | LOS ANGELES | SWP |
| CA1910044 | GLENDORA-CITY, WATER DEPT. | C | D4 | T2 | LOS ANGELES | SWP |
| CA1900649 | GOLDEN SANDS MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1900767 | GOLDEN VALLEY MUNICIPAL WATER DISTRICT | C | D1 | T1 | LOS ANGELES | GW |
| CA1910244 | GREEN VALLEY CWD | C | D2 | T1 | LOS ANGELES | GW |
| CA1910004 | GSWC - ARTESIA | C | D4 | T2 | LOS ANGELES | GW |
| CA1910011 | GSWC - BELL, BELL GARDENS | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910024 | GSWC - CLAREMONT | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910030 | GSWC - CULVER CITY | C | D4 | T1 | LOS ANGELES | SWP |
| CA1910077 | GSWC - FLORENCE/GRAHAM | C | D3 | T2 | LOS ANGELES | SWP |
| CA1910195 | GSWC - HOLLYDALE | C | D2 | T2 | LOS ANGELES | GW |
| CA1910098 | GSWC - NORWALK | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910155 | GSWC - SOUTHWEST | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910072 | GSWC - WILLOWBROOK | C | D2 | T1 | LOS ANGELES | SWP |
| CA1910142 | GSWC-SAN DIMAS | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910212 | GSWC-SOUTH ARCADIA | C | D3 | T2 | LOS ANGELES | GW |
| CA1910223 | GSWC-SOUTH SAN GABRIEL | C | D4 | T2 | LOS ANGELES | SWP |
| CA1900715 | HALFWAY HOUSE CAFE | NC | D1 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910047 | HAWTHORNE-CITY WATER DEPT. | C | D3 | T3 | LOS ANGELES | SWP |
| CA1910053 | HEMLOCK MUTUAL WATER CO. | C | D2 | TD | LOS ANGELES | GW |
| CA1900764 | HENNINGER FLATS | NC | D1 | T2 | LOS ANGELES | SW |
| CA1900886 | HUGHES-ELIZABETH LAKE UNIFIED SCHOOL DIS | NTNC | D1 | T2 | LOS ANGELES | GW |
| CA1910254 | HUNGRY VALLEY STATE VEHICULAR REC AREA | NTNC | D1 | TD | LOS ANGELES | GW |
| CA1910049 | HUNTINGTON PARK-CITY, WATER DEPT. | C | D4 | TD | LOS ANGELES | SWP |
| CA1900008 | HUTTOPIA PARADISE SPRINGS | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900035 | IBY | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1900707 | ILEAD AGUA DULCE CHARTER SCHOOL | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1910051 | INGLEWOOD- CITY, WATER DEPT. | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910035 | KINNELOA IRRIGATION DIST. | C | D3 | TD | LOS ANGELES | GW |
| CA1907015 | KIRK BUSINESS CENTER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910054 | LA CANADA IRRIGATION DIST. | C | D3 | TD | LOS ANGELES | SWP |
| CA1910218 | LA HABRA HEIGHTS CWD | C | D2 | TD | LOS ANGELES | SWP |
| CA1990020 | LA PAZ, MALIBU (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910060 | LA PUENTE VALLEY CWD | C | D3 | T3 | LOS ANGELES | GW |
| CA1910062 | LA VERNE, CITY WD | C | D4 | T3 | LOS ANGELES | SWP |
| CA1995010 | LA/GLENDALE WATER RECLAMATION PLANT | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910056 | LAKE ELIZABETH MUTUAL WATER CO. | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910239 | LAKEWOOD - CITY, WATER DEPT. | C | D5 | T2 | LOS ANGELES | GW |
| CA1909645 | LANCASTER NATIONAL SOCCER CENTER | NC | D1 | T1 | LOS ANGELES | GW |
| CA1900038 | LANCASTER PARK MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1900808 | LANCASTER WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1990019 | LANCASTER, CITY OF (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910246 | LAND PROJECTS MUTUAL WATER CO. | C | D2 | TD | LOS ANGELES | GW |
| CA1900809 | LANDALE MUTUAL WATER COMPANY | C | D1 | T1 | LOS ANGELES | GW |
| CA1900820 | LANG RANCH SHOPPING CENTER | NC | D1 | T1 | LOS ANGELES | GW |
| CA1910061 | LAS FLORES WATER CO. | C | D3 | T2 | LOS ANGELES | SWP |
| CA1995001 | LAS VIRGENES MUNICIPAL WATER DISTRICT | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910225 | LAS VIRGENES MWD | C | D5 | T4 | LOS ANGELES | SW |
| CA1900081 | LE CHENE RESTAURANT WATER SYSTEM | NC | D1 | T1 | LOS ANGELES | GW |
| CA1910066 | LEISURE LAKE MOBILE ESTATES | C | D1 | T2 | LOS ANGELES | GW |
| CA1910211 | LIBERTY UTILITIES - BELLFLOWER-NORWALK | C | D5 | T1 | LOS ANGELES | SWP |
| CA1910021 | LIBERTY UTILITIES - COMPTON | C | D3 | T1 | LOS ANGELES | SWP |
| CA1910161 | LIBERTY UTILITIES - LYNWOOD | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910241 | LIBERTY UTILITIES - MESA CREST | C | D2 | There are no treatment plants | LOS ANGELES | SWP |
| CA1900913 | LILY OF THE VALLEY MOBILE VILLAGE | C | D1 | T1 | LOS ANGELES | GW |
| CA1910063 | LINCOLN AVENUE WATER CO. | C | D4 | T2 | LOS ANGELES | SW |
| CA1900158 | LITTLE BALDY WATER | C | D1 | T1 | LOS ANGELES | GW |
| CA1910064 | LITTLEROCK CREEK IRRIGATION DIST. | C | D2 | TD | LOS ANGELES | GW |
| CA1907024 | LIVING SPRINGS CHURCH | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900018 | LIVINGSTON-GRAHAM HANSON AGGREGATES | NTNC | D1 | T2 | LOS ANGELES | GW |
| CA1900849 | LLANO DEL RIO WATER COMPANY | C | D1 | T1 | LOS ANGELES | GW |
| CA1900303 | LLANO MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GWP |
| CA1910238 | LOCKHEED MARTIN SKUNK WORKS | NTNC | D1 | TD | LOS ANGELES | GW |
| CA1910073 | LOMITA-CITY, WATER DEPT. | C | D3 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910065 | LONG BEACH UTILITIES DEPARTMENT | C | D5 | T5 | LOS ANGELES | SWP |
| CA1990002 | LONG BEACH, CITY OF | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990022 | LOS ANGELES BUREAU OF SANITATION | NP | Missing treatment classification in SDWIS | LOS ANGELES | ||
| CA1990007 | LOS ANGELES COUNTY DPW | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990005 | LOS ANGELES COUNTY SANITATION DISTRICT | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910075 | LOS ANGELES CWWD 21-KAGEL CANYON | C | D1 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910204 | LOS ANGELES CWWD 29 & 80-MALIBU | C | D4 | T1 | LOS ANGELES | SWP |
| CA1910185 | LOS ANGELES CWWD 36-VAL VERDE | C | D3 | T1 | LOS ANGELES | SWP |
| CA1910248 | LOS ANGELES CWWD 37-ACTON | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910070 | LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910203 | LOS ANGELES CWWD 40, R 24,27,33-PEARBLSM | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910027 | LOS ANGELES CWWD 40, REG. 35-N.E. L.A. | C | D1 | T1 | LOS ANGELES | GW |
| CA1910005 | LOS ANGELES CWWD 40, REG. 38-LAKE LA | C | D4 | TD | LOS ANGELES | SWP |
| CA1910025 | LOS ANGELES CWWD 40, REG. 39-ROCK CREEK | C | D1 | T1 | LOS ANGELES | SWP |
| CA1900062 | LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA | C | D1 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910138 | LOS ANGELES WORLD AIRPORTS | NTNC | D1 | TD | LOS ANGELES | GW |
| CA1910443 | LOS ANGELES, CITY OF - CASTAIC PWR PLANT | NTNC | D1 | T2 | LOS ANGELES | SW |
| CA1900555 | LOS ANGELES, CITY OF - POWER PLANT #1 | C | D1 | T2 | LOS ANGELES | SW |
| CA1900542 | LOS ANGELES, CITY OF - POWER PLANT #2 | C | D1 | T2 | LOS ANGELES | SW |
| CA1910067 | LOS ANGELES-CITY, DEPT. OF WATER & POWER | C | D5 | T5 | LOS ANGELES | SW |
| CA1910081 | LYNWOOD PARK MUTUAL WATER CO. | C | D1 | T1 | LOS ANGELES | GW |
| CA1910079 | LYNWOOD-CITY, WATER DEPT. | C | D5 | T2 | LOS ANGELES | SWP |
| CA1990031 | MALIBU COUNTRY CLUB | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990021 | MALIBU LUMBER (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910083 | MANHATTAN BEACH-CITY, WATER DEPT. | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910084 | MAYWOOD MUTUAL WATER CO. #1 | C | D2 | T1 | LOS ANGELES | SWP |
| CA1910085 | MAYWOOD MUTUAL WATER CO. #2 | C | D2 | T1 | LOS ANGELES | SWP |
| CA1910086 | MAYWOOD MUTUAL WATER CO. #3 | C | D2 | TD | LOS ANGELES | SWP |
| CA1990015 | METROPOLITAN TRANSPORTATION AGENCY | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910087 | METROPOLITAN WATER DIST. OF SO. CAL. | C | D5 | T5 | LOS ANGELES | SW |
| CA1990026 | METROPOLITAN WATER DISTRICT OF SO. CAL. | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900100 | METTLER VALLEY MUTUAL | C | D1 | T1 | LOS ANGELES | GW |
| CA1900699 | MILLARD CANYON IMPROVEMENT ASSOCIATION | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900929 | MIRA LOMA HIGH DESERT HOSPITAL | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1900785 | MITCHELL'S AVENUE E MOBILE HOME PARK | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910090 | MONROVIA-CITY, WATER DEPT. | C | D4 | T4 | LOS ANGELES | GW |
| CA1910091 | MONTEBELLO LAND & WATER CO. | C | D2 | T2 | LOS ANGELES | GW |
| CA1910092 | MONTEREY PARK-CITY, WATER DEPT. | C | D5 | T4 | LOS ANGELES | GW |
| CA1901002 | MOUNT KARE CAMP/KARE YOUTH LEAGUE | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900581 | MOUNTAIN HIGH EAST SKI AREA | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1995009 | NEWHALL RANCH COMPANY | NP | There are no treatment plants | LOS ANGELES | ||
| CA1907014 | NORTH TRAILS MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910097 | NORTHROP GRUMMAN CORP. | NTNC | D2 | TD | LOS ANGELES | GW |
| CA1910191 | NORWALK - CITY, WATER DEPT. | C | D4 | T1 | LOS ANGELES | SWP |
| CA1900537 | OAK GROVE MOBILE HOME PARK | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910101 | ORCHARD DALE WATER DISTRICT | C | D3 | T2 | LOS ANGELES | GWP |
| CA1910103 | PALM RANCH IRRIGATION DIST. | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910102 | PALMDALE WATER DIST. | C | D5 | T5 | LOS ANGELES | SW |
| CA1995015 | PALMDALE WATER DISTRICT (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990027 | PARADISE COVE LAND COMPANY, LLC | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910099 | PARADISE RANCH MHP | C | D1 | T1 | LOS ANGELES | GW |
| CA1910105 | PARAMOUNT - CITY, WATER DEPT. | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910124 | PASADENA WATER AND POWER | C | D5 | T4 | LOS ANGELES | SWP |
| CA1990010 | PASADENA, CITY OF | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900046 | PETER PITCHESS HONOR RANCHO DETN. CTR | C | D2 | TD | LOS ANGELES | GW |
| CA1910042 | PICO RIVERA - CITY, WATER DEPT. | C | D3 | TD | LOS ANGELES | GW |
| CA1910125 | PICO WD | C | D3 | TD | LOS ANGELES | GW |
| CA1909648 | PLANT WATER WELL - ROCKVIEW DAIRY | NTNC | D1 | TD | LOS ANGELES | GW |
| CA1910126 | POMONA - CITY, WATER DEPT. | C | D5 | T5 | LOS ANGELES | SW |
| CA1990011 | POMONA, CITY OF | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900244 | PYRAMID LAKE RV RESORT | NC | D1 | T1 | LOS ANGELES | GW |
| CA1910305 | QUAIL CANYON SEA | NC | NR | TD | LOS ANGELES | GW |
| CA1910130 | QUARTZ HILL WATER DIST. | C | D4 | T2 | LOS ANGELES | SWP |
| CA1900679 | RANCHO LOS AMIGOS HOSPITAL | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1995011 | RANCHO MALIBU TENATIVE TRACT 46277 | NP | There are no treatment plants | LOS ANGELES | ||
| CA1907031 | RANCHO YBARRA CHRISTIAN CAMP | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900145 | REESEDALE MUTUAL | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900868 | RIVERS END TRAILER PARK | C | D1 | T2 | LOS ANGELES | GW |
| CA1995013 | ROWLAND WATER DISTRICT | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910194 | ROWLAND WATER DISTRICT | C | D5 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910140 | RUBIO CANON LAND & WATER ASSOCIATION | C | D3 | T3 | LOS ANGELES | SW |
| CA1900057 | SAINT ANDREWS ABBEY | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910143 | SAN FERNANDO-CITY, WATER DEPT. | C | D3 | T2 | LOS ANGELES | GW |
| CA1910144 | SAN GABRIEL COUNTY WD | C | D3 | T2 | LOS ANGELES | GW |
| CA1910189 | SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1 | C | D3 | There are no treatment plants | LOS ANGELES | GWP |
| CA1910117 | SAN GABRIEL VALLEY WATER CO-MONTEBELLO 2 | C | D2 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910039 | SAN GABRIEL VALLEY WATER CO.-EL MONTE | C | D5 | T5 | LOS ANGELES | GW |
| CA1995021 | SAN GABRIEL VALLEY WC - RECYCLED WATER | NP | There are no treatment plants | LOS ANGELES | ||
| CA1995018 | SANTA CATALINA ISLAND COMPANY, INC. (REC | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910247 | SANTA CLARITA VALLEY W.A.-CASTAIC DIV. | C | D2 | T2 | LOS ANGELES | SWP |
| CA1910048 | SANTA CLARITA VALLEY W.A.-IMPORTED DIVIS | C | D5 | T5 | LOS ANGELES | SW |
| CA1910096 | SANTA CLARITA VALLEY W.A.-NEWHALL DIV. | C | D4 | T2 | LOS ANGELES | SWP |
| CA1910250 | SANTA CLARITA VALLEY W.A.-PINETREE DIV. | C | D4 | TD | LOS ANGELES | SWP |
| CA1910017 | SANTA CLARITA VALLEY W.A.-SANTA CLARITA | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910255 | SANTA CLARITA VALLEY W.A.-TESORO DIV. | C | D2 | T1 | LOS ANGELES | SWP |
| CA1910240 | SANTA CLARITA VALLEY W.A.-VALENCIA DIVIS | C | D5 | T5 | LOS ANGELES | SW |
| CA1910245 | SANTA FE SPRINGS - CITY, WATER DEPT. | C | D4 | There are no treatment plants | LOS ANGELES | SWP |
| CA1995004 | SANTA MONICA, CITY OF - RECLAMATION | NP | Missing treatment classification in SDWIS | LOS ANGELES | GW | |
| CA1910146 | SANTA MONICA-CITY, WATER DIVISION | C | D5 | T4 | LOS ANGELES | SWP |
| CA1990018 | SCVWA-GENERAL ORDER SERVICE AREA | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990029 | SCVWA-VISTA CANYON FACTORY SERVICE AREA | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900301 | SHADOW ACRES MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | SWP |
| CA1907016 | SHEPHERD OF THE HILLS | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900907 | SHERWOOD MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1910148 | SIERRA MADRE-CITY, WATER DEPT. | C | D3 | T2 | LOS ANGELES | SWP |
| CA1910149 | SIGNAL HILL - CITY, WATER DEPT. | C | D4 | T2 | LOS ANGELES | SWP |
| CA1900903 | SLEEPY VALLEY WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910006 | SO. CAL. EDISON CO.-SANTA CATALINA | C | D3 | T3 | LOS ANGELES | SW |
| CA1910152 | SOUTH GATE-CITY, WATER DEPT. | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910153 | SOUTH MONTEBELLO IRRIGATION DIST. | C | D2 | T2 | LOS ANGELES | GW |
| CA1907028 | SPV WATER COMPANY | C | D1 | T1 | LOS ANGELES | GW |
| CA1910158 | STERLING MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1995016 | SUBURBAN WATER SYSTEM (RECYCLED WATER) | NP | There are no treatment plants | LOS ANGELES | ||
| CA1910147 | SUBURBAN WATER SYSTEMS - SATIVA | C | D2 | TD | LOS ANGELES | SWP |
| CA1910200 | SUBURBAN WATER SYSTEMS-COVINA KNOLLS | C | D1 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910046 | SUBURBAN WATER SYSTEMS-GLENDORA | C | D2 | There are no treatment plants | LOS ANGELES | SWP |
| CA1910059 | SUBURBAN WATER SYSTEMS-LA MIRADA | C | D3 | T2 | LOS ANGELES | GW |
| CA1910205 | SUBURBAN WATER SYSTEMS-SAN JOSE | C | D5 | T4 | LOS ANGELES | SWP |
| CA1910174 | SUBURBAN WATER SYSTEMS-WHITTIER | C | D5 | TD | LOS ANGELES | GW |
| CA1907018 | SUMMERHILL EQUESTRIAN CENTER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900563 | SUNDALE MUTUAL WATER COMPANY A, B | C | D2 | There are no treatment plants | LOS ANGELES | GW |
| CA1910157 | SUNNY SLOPE WATER CO. | C | D3 | T3 | LOS ANGELES | GW |
| CA1900146 | SUNNYSIDE FARMS MUTUAL WATER COMPANY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900721 | TERRA NOVA MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1900752 | TEXAS CANYON RANGER STATION | NTNC | D1 | T1 | LOS ANGELES | GW |
| CA1910137 | THE BOEING COMPANY - HDAIT | NTNC | D1 | TD | LOS ANGELES | GW |
| CA1900976 | THE OAKS | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900074 | THE PAINTED TURTLE CAMP | C | D1 | T2 | LOS ANGELES | GW |
| CA1900616 | THE RIVER COMMUNITY | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900520 | THE VILLAGE MOBILE HOME PARK | C | D1 | T1 | LOS ANGELES | GW |
| CA1910041 | THREE VALLEYS MWD | C | D4 | T5 | LOS ANGELES | SW |
| CA1900154 | TIERRA BONITA MUTUAL WATER | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900040 | TN TRUSS | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910213 | TORRANCE-CITY, WATER DEPT. | C | D5 | T2 | LOS ANGELES | SWP |
| CA1910159 | TRACT 180 MUTUAL WATER CO. | C | D3 | TD | LOS ANGELES | GW |
| CA1910160 | TRACT 349 MUTUAL WATER CO. | C | D3 | TD | LOS ANGELES | GW |
| CA1990009 | UPPER SAN GABRIEL MWD | NP | There are no treatment plants | LOS ANGELES | ||
| CA1990024 | USC WRIGLEY MARINE SCIENCE CENTRE | NP | There are no treatment plants | LOS ANGELES | ||
| CA1900974 | USFS-APPLETREE FLATS V-3 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900078 | USFS-BIG PINES V-2 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900058 | USFS-BUCKHORN CAMP A-12 WATER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900077 | USFS-CHANTRY FLATS-A16 WATER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900571 | USFS-CHILAO MAIN A-9 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900586 | USFS-CRYSTAL LAKE B-13 WATER | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900512 | USFS-JACKSON FLATS V-2-1 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900583 | USFS-JACKSON LAKE V-4 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1907019 | USFS-LOS ALAMOS S-15 | NC | D1 | T1 | LOS ANGELES | GW |
| CA1900020 | USFS-MILL CREEK SUMMIT T-5 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900576 | USFS-MONTE CRISTO CAMP T-4 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900937 | USFS-PYRAMID LAKE S-14 | NC | D1 | T2 | LOS ANGELES | SW |
| CA1900922 | USFS-RED BOX STATION A-3 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900588 | USFS-RINCON STATION B-10 | NC | NR | There are no treatment plants | LOS ANGELES | GW |
| CA1900914 | USFS-SKYLINE PARK / MOUNT WILSON A-4 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900791 | USFS-SYCAMORE FLATS V-5 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1909627 | USFS-VALYERMO RANGER STATION | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910163 | VALENCIA HEIGHTS WATER CO. | C | D3 | T2 | LOS ANGELES | SWP |
| CA1900599 | VALHALLA WATER ASSOCIATION | C | D1 | T2 | LOS ANGELES | GW |
| CA1910009 | VALLEY COUNTY WATER DIST. | C | D4 | T5 | LOS ANGELES | GW |
| CA1910165 | VALLEY VIEW MUTUAL WATER CO. | C | D2 | TD | LOS ANGELES | GW |
| CA1910166 | VALLEY WATER CO. | C | D3 | T3 | LOS ANGELES | SWP |
| CA1900556 | VASQUEZ ROCKS COUNTY PARK | NC | D1 | T2 | LOS ANGELES | GU |
| CA1910167 | VERNON-CITY, WATER DEPT. | C | D4 | T1 | LOS ANGELES | SWP |
| CA1907013 | WAGON WHEEL PLAZA | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910169 | WALNUT PARK MUTUAL WATER CO. | C | D3 | TD | LOS ANGELES | GW |
| CA1910234 | WALNUT VALLEY WATER DISTRICT | C | D5 | There are no treatment plants | LOS ANGELES | SWP |
| CA1990004 | WALNUT VALLEY WD | NP | There are no treatment plants | LOS ANGELES | ||
| CA1907032 | WASTE MANAGEMENT OF LANCASTER | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1990003 | WATER REPLENISHMENT DISTRICT | NP | Missing treatment classification in SDWIS | LOS ANGELES | ||
| CA1990001 | WEST BASIN MUNICIPAL WATER DISTRICT | NP | There are no treatment plants | LOS ANGELES | ||
| CA1909006 | WEST VALLEY COUNTY WATER DISTRICT | C | D1 | TD | LOS ANGELES | GW |
| CA1900541 | WESTERN SKIES MOBILE HOME PARK | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900102 | WESTSIDE PARK MUTUAL WATER | C | D1 | T1 | LOS ANGELES | GW |
| CA1910249 | WHITE FENCE FARMS MWC NO. 1 | C | D2 | T2 | LOS ANGELES | SWP |
| CA1900523 | WHITE FENCE FARMS MWC NO.3 | C | D1 | T2 | LOS ANGELES | SWP |
| CA1910173 | WHITTIER-CITY, WATER DEPT. | C | D4 | T4 | LOS ANGELES | GW |
| CA1900155 | WILSONA GARDENS MUTUAL | C | D1 | T1 | LOS ANGELES | GW |
| CA1900961 | WINTERHAVEN MOBILE ESTATES | C | D1 | T1 | LOS ANGELES | GW |
| CA1900741 | YOUNG-NAK PRESBYTERIAN CHURCH | NC | D1 | T1 | LOS ANGELES | GW |
| CA1909015 | 21ST CENTURY HOLINESS TABERNACLE CHURCH | NC | D1 | T1 | LOS ANGELES | GW |
| CA1900992 | BIG OAKS LODGE | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900806 | BLUE SKIES MOBILE HOME PARK | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900893 | CAMP BLOOMFIELD | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900631 | CAMP CISQUITO / LIVE AGAIN RECOVERY HOME | NC | D1 | T1 | LOS ANGELES | GW |
| CA1900834 | CAMP EATON | NC | D1 | There are no treatment plants | LOS ANGELES | GWP |
| CA1900613 | CAMP HI HILL | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900559 | CAMP HILLEL HOUSE | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900888 | CAMP SHALOM/JCA | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900212 | CAMP SINGING PINES | NC | There are no treatment plants | LOS ANGELES | GWP | |
| CA1900601 | CAMP UNITY / BARLEY FLATS | NC | There are no treatment plants | LOS ANGELES | GWP | |
| CA1900620 | CAMP VALCREST | NC | D1 | There are no treatment plants | LOS ANGELES | GWP |
| CA1900706 | CHAMPION MUTUAL WATER COMPANY | C | There are no treatment plants | LOS ANGELES | GWP | |
| CA1900831 | DECKER CANYON YOUTH CAMP | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900122 | ENVIRONMENTAL CARE INDUSTRIES-VLY CREST | NTNC | There are no treatment plants | LOS ANGELES | GW | |
| CA1900702 | FOLLOWS CAMP | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900912 | GORMAN ELEMENTARY SCHOOL | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900534 | JACKIE ROBINSON COUNTY PARK | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900733 | JUBILEE SCOUT RANCH-BSA | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900034 | MARTINEZ/SIERRA HIGHWAY SHELL STATION | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900127 | MOUNT WATERMAN SKI RESORT | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1907036 | NEW APOSTOLIC CHURCH | NC | D1 | Missing treatment classification in SDWIS | LOS ANGELES | GW |
| CA1900864 | NEWCOMB'S RANCH INN | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1995002 | NEWHALL CWD-NEWHALL | NP | There are no treatment plants | LOS ANGELES | ||
| CA1909007 | OUR LADY OF FATIMA SCHOOL - HOLY FAMILY | NTNC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900815 | PIUTE MUTUAL WC | C | There are no treatment plants | LOS ANGELES | GW | |
| CA1907029 | RANCHO SIERRA ACRES | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1910141 | RURBAN HOMES MUTUAL WATER CO. | C | D2 | TD | LOS ANGELES | GW |
| CA1900064 | SAN DIMAS CANYON IMPROVMENT ASSOCIATION | C | There are no treatment plants | LOS ANGELES | SW | |
| CA1900664 | SKY TERRACE MOBILE HOME PARK | C | There are no treatment plants | LOS ANGELES | GWP | |
| CA1900591 | STURTEVANT CAMP, UNITED METHODIST | NC | D1 | There are no treatment plants | LOS ANGELES | SW |
| CA1900126 | THE ROBIN S NEST RECR. RESORT | C | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900569 | TRASK SCOUT RESER.-BOY SCOUTS OF AMERICA | NC | D1 | T2 | LOS ANGELES | SW |
| CA1900736 | USFS LITTLEROCK CAMP V-10, LAKESIDE V-9 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900528 | USFS-CHARLTON FLATS A-8 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900644 | USFS-HORSE FLATS A-10 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900729 | USFS-LOS CANTILLES S-2 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1900131 | USFS-TEXAS CANYON STATION S-3 | NC | D1 | There are no treatment plants | LOS ANGELES | GW |
| CA1995012 | WHITTIER NARROWS OU | NP | There are no treatment plants | LOS ANGELES |