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Hide/show columns: Water System No. | Water System Name |
Type | Status |
Principal County Served | Primary Source Water Type |
| Water System No. | Water System Name | Type | Status | Principal County Served | Primary Source Water Type |
|---|---|---|---|---|---|
| Water System No. | Water System Name | Type | Status | Principal County Served | Primary Source Water Type |
| CA4000725 | 141 SUBURBAN ROAD WATER SUPPLY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000740 | ADELAIDE ESTATES | NP | A | SAN LUIS OBISPO | GW |
| CA4000744 | AFUERA DE CHORRO WATER COMPANY | C | A | SAN LUIS OBISPO | GW |
| CA4000631 | ALMIRA WATER ASSOCIATION | C | A | SAN LUIS OBISPO | GW |
| CA4000823 | ARONHILL VINEYARD | NC | A | SAN LUIS OBISPO | GW |
| CA4000784 | ARROYO GRANDE MUSHROOM FARM | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010001 | ARROYO GRANDE, WATER DEPARTMENT | C | A | SAN LUIS OBISPO | SWP |
| CA4010002 | ATASCADERO MUTUAL WATER CO | C | A | SAN LUIS OBISPO | GW |
| CA4010832 | ATASCADERO STATE HOSPITAL | C | A | SAN LUIS OBISPO | GW |
| CA4000222 | AVILA BEACH COMMUNITY SERVICES DISTRICT | C | A | SAN LUIS OBISPO | SWP |
| CA4090013 | AVILA BEACH CSD - RW | NP | A | SAN LUIS OBISPO | |
| CA4000716 | AVILA VALLEY MUTUAL WATER CO | C | A | SAN LUIS OBISPO | SWP |
| CA4000644 | BABE RUTH'S OAK VIEW | NC | A | SAN LUIS OBISPO | GW |
| CA4000209 | BALL TAGAWA GROWERS | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000214 | BARON CANYON MUTUAL WATER CO. | C | A | SAN LUIS OBISPO | GW |
| CA4000200 | BASSI RANCH MUTUAL WATER CO. | C | A | SAN LUIS OBISPO | GW |
| CA4090005 | BAYWOOD PARK/ LOS OSOS - RWP | NP | A | SAN LUIS OBISPO | |
| CA4000660 | BEAR VALLEY WATER COMPANY | C | A | SAN LUIS OBISPO | GW |
| CA4000733 | BIDDLE REGIONAL COUNTY PARK | NC | A | SAN LUIS OBISPO | GW |
| CA4000704 | BLACK LAKE CANYON WATER SUPPLY | NP | A | SAN LUIS OBISPO | |
| CA4000643 | BLACK MOUNTAIN R.V. RESORT | NC | A | SAN LUIS OBISPO | GW |
| CA4000639 | BLUE SKY WATER ASSOCIATION | NP | A | SAN LUIS OBISPO | GW |
| CA4000675 | BRANCH ELEMENTARY SCHOOL | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000640 | CAL SHASTA CLUB | NC | A | SAN LUIS OBISPO | GW |
| CA4010830 | CALIFORNIA MENS COLONY | C | A | SAN LUIS OBISPO | SW |
| CA4090001 | CALIFORNIA MENS COLONY - RW | NP | A | SAN LUIS OBISPO | |
| CA4000805 | CALLENDER GROVE MUTUAL WATER | C | A | SAN LUIS OBISPO | GW |
| CA4000503 | CALLENDER WATER ASSOCIATION | NP | A | SAN LUIS OBISPO | GW |
| CA4010900 | CALTRANS - SHANDON REST STOP | NC | A | SAN LUIS OBISPO | GW |
| CA4010014 | CAMBRIA COMM SERVICES DIST | C | A | SAN LUIS OBISPO | GW |
| CA4090015 | CAMBRIA CSD - RECYCLED WATER | NP | A | SAN LUIS OBISPO | |
| CA4000230 | CANYON CREST MUTUAL BENEFIT WC | C | A | SAN LUIS OBISPO | SWP |
| CA4000732 | CARRISA PLAINS ELEMENTARY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010006 | CAYUCOS BEACH MUTUAL WATER COMPANY | C | A | SAN LUIS OBISPO | SWP |
| CA4000757 | CERRO ALTO CAMPGROUND | NC | A | SAN LUIS OBISPO | GW |
| CA4000642 | CHRISTMAS COVE | NC | A | SAN LUIS OBISPO | GW |
| CA4090002 | CITY OF SAN LUIS OBISPO, SANITATION DEPT | NP | A | SAN LUIS OBISPO | |
| CA4000207 | CLEARWATER NURSERY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000809 | CONGREGATION BETH DAVID | NC | A | SAN LUIS OBISPO | GW |
| CA4000752 | COPELAND'S PROPERTIES | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000637 | COUNTRY HILLS ESTATES | C | A | SAN LUIS OBISPO | GW |
| CA4000590 | COUNTY OF MONTEREY-LAKE NACIMIENTO | NTNC | A | SAN LUIS OBISPO | GU |
| CA4000210 | CRESTON COUNTRY STORE | NC | A | SAN LUIS OBISPO | GW |
| CA4000693 | CRESTON ELEMENTARY SCHOOL | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000598 | CUYAMA LANE WATER COMPANY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4090006 | CYPRESS RIDGE DEVELOPMENT RW | NP | A | SAN LUIS OBISPO | |
| CA4000825 | DAOU VINEYARDS, LLC | NC | A | SAN LUIS OBISPO | GW |
| CA4000587 | DEER VALLEY | NP | A | SAN LUIS OBISPO | GW |
| CA4000817 | EAST AIRPORT FIERO LANE WATER COMPANY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000202 | EDNA VALLEY RANCH EAST | C | A | SAN LUIS OBISPO | GW |
| CA4000819 | EDNA VALLEY VINEYARDS | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000671 | ELKS LODGE #322 | NTNC | A | SAN LUIS OBISPO | GW |
| CA4090003 | EMERALD HILLS ESTATES RW | NP | A | SAN LUIS OBISPO | |
| CA4090012 | FIERO LANE RECYCLED WATER COMPANY | NP | A | SAN LUIS OBISPO | |
| CA4000722 | FIERO LANE WATER COMPANY, INC. | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000201 | FIRST BAPTIST CHURCH | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000507 | GARDEN FARMS C.W.D. | C | A | SAN LUIS OBISPO | GW |
| CA4000224 | GARL, KEITH | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010023 | GOLDEN STATE WATER COMPANY - EDNA | C | A | SAN LUIS OBISPO | GW |
| CA4010017 | GOLDEN STATE WATER COMPANY - LOS OSOS | C | A | SAN LUIS OBISPO | GW |
| CA4010018 | GOLDEN STATE WATER COMPANY - NIPOMO | C | A | SAN LUIS OBISPO | GW |
| CA4010040 | GOLDEN STATE WATER COMPANY-CYPRESS RIDGE | C | A | SAN LUIS OBISPO | GW |
| CA4000700 | GRANITE RIDGE | NC | A | SAN LUIS OBISPO | GW |
| CA4000554 | GREEN RIVER MUTUAL WATER CO. | C | A | SAN LUIS OBISPO | GW |
| CA4000211 | GREENHEART FARMS | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010004 | GROVER BEACH WATER DEPARTMENT | C | A | SAN LUIS OBISPO | SW |
| CA4000555 | GUADALUPE COOLING COMPANY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000741 | H2O, INC | C | A | SAN LUIS OBISPO | GW |
| CA4000501 | HALCYON WATER SYSTEM | C | A | SAN LUIS OBISPO | GW |
| CA4010301 | HEARST MEMORIAL STATE BEACH | NC | A | SAN LUIS OBISPO | GW |
| CA4010300 | HEARST MONUMENT STATE PARK | NTNC | A | SAN LUIS OBISPO | SW |
| CA4010012 | HERITAGE RANCH CSD | C | A | SAN LUIS OBISPO | SW |
| CA4000632 | HIDDEN HILLS MOBILODGE | C | A | SAN LUIS OBISPO | GW |
| CA4000563 | HIGUERA APARTMENTS | C | A | SAN LUIS OBISPO | GW |
| CA4000730 | HOLDGRAFER & ASSOCIATES | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000770 | HORIZON LANE WATER SUPPLY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000788 | HUNTER RANCH GOLF COURSE | NC | A | SAN LUIS OBISPO | GW |
| CA4000824 | INN AT OPOLO KITCHEN, THE | NC | A | SAN LUIS OBISPO | GW |
| CA4000203 | IRISH HILLS MUTUAL WATER CO | C | A | SAN LUIS OBISPO | GW |
| CA4000768 | J M SIMS WATER SUPPLY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000673 | JACK RANCH CAFE | NC | A | SAN LUIS OBISPO | GW |
| CA4000816 | JESPERSEN RANCH | NP | A | SAN LUIS OBISPO | |
| CA4000822 | KANAWYER, RAYMOND | NP | A | SAN LUIS OBISPO | |
| CA4000648 | KEN MAR GARDENS | C | A | SAN LUIS OBISPO | GW |
| CA4000820 | KUKKULA INC | NC | A | SAN LUIS OBISPO | GW |
| CA4000502 | LA MESA WATER COMPANY | NP | A | SAN LUIS OBISPO | GW |
| CA4000221 | LAETITIA VINEYARD & WINERY INC | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000705 | LAGUNA NEGRA MUTUAL WATER CO. | C | A | SAN LUIS OBISPO | GW |
| CA4000664 | LAGUNA VISTA BOAT CLUB | NC | A | SAN LUIS OBISPO | GW |
| CA4000815 | LAS VENTANAS RANCH | C | A | SAN LUIS OBISPO | GW |
| CA4000747 | LAST STAGE WEST | NC | A | SAN LUIS OBISPO | GW |
| CA4000206 | LAUREATE WATER COMPANY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000219 | LINKS AT VISTA DEL HOMBRE, THE | NC | A | SAN LUIS OBISPO | GW |
| CA4000708 | LOADING CHUTE | NC | A | SAN LUIS OBISPO | GW |
| CA4000707 | LONGBRANCH SALOON, THE | NC | A | SAN LUIS OBISPO | GW |
| CA4010022 | LOPEZ PROJECT | C | A | SAN LUIS OBISPO | SW |
| CA4000701 | LOPEZ RECREATION AREA | NC | A | SAN LUIS OBISPO | GW |
| CA4010016 | LOS OSOS COMMUNITY SERVICES DISTRICT | C | A | SAN LUIS OBISPO | GW |
| CA4090010 | LOS OSOS CSD - WWTP | NP | A | SAN LUIS OBISPO | |
| CA4000649 | LOS ROBLES MOBILE HOME ESTATES | C | A | SAN LUIS OBISPO | GW |
| CA4000780 | MADONNA INN WATER COMPANY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000629 | MAXWELLTON MUTUAL WATER | NP | A | SAN LUIS OBISPO | GW |
| CA4000737 | MCNAMERA WATER SUPPLY | NP | A | SAN LUIS OBISPO | GW |
| CA4000650 | MESA DUNES MOBILE HOME ESTATES | C | A | SAN LUIS OBISPO | GW |
| CA4090004 | MONARCH GROVE RECYCLED WATER | NP | A | SAN LUIS OBISPO | |
| CA4010305 | MONTANA DE ORO STATE PARK | NC | A | SAN LUIS OBISPO | SW |
| CA4000808 | MONTE SERENO MUTUAL BENEFIT WATER | C | A | SAN LUIS OBISPO | GW |
| CA4010011 | MORRO BAY PW DEPT - WATER DIVISION | C | A | SAN LUIS OBISPO | SWP |
| CA4090016 | MORRO BAY RECYCLED WATER SYSTEM | NP | A | SAN LUIS OBISPO | |
| CA4010015 | MORRO ROCK MUTUAL WATER CO | C | A | SAN LUIS OBISPO | SWP |
| CA4000775 | MUSTANG SPRINGS MUTUAL WATER | C | A | SAN LUIS OBISPO | GW |
| CA4000623 | MUTUAL WATER ASSOCIATION | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010027 | NACIMIENTO WATER COMPANY | C | A | SAN LUIS OBISPO | SW |
| CA4010080 | NACIMIENTO WATER PROJECT | C | A | SAN LUIS OBISPO | SW |
| CA4000772 | NEWSOM SPRINGS MUTUAL WATER CO | NP | A | SAN LUIS OBISPO | GW |
| CA4000818 | NINER WINE ESTATES, LLC | NC | A | SAN LUIS OBISPO | GW |
| CA4010026 | NIPOMO COMM SERVICES DIST | C | A | SAN LUIS OBISPO | SWP |
| CA4000734 | NOLL PROPERTIES | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000652 | NORTHSHORE S & B, INC | NC | A | SAN LUIS OBISPO | SW |
| CA4000505 | NUNES WATER COMPANY | NP | A | SAN LUIS OBISPO | GW |
| CA4010005 | OCEANO COMM SERVICES DIST. | C | A | SAN LUIS OBISPO | SWP |
| CA4000226 | PACIFIC DUNES RANCH | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000604 | PARAGON TRIANGLE WATER SUPPLY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000778 | PARSONS WATER SUPPLY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000781 | PASO 360 | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000692 | PASO ROBLES CHEVROLET CADILLAC | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000790 | PASO ROBLES RV RANCH | NC | A | SAN LUIS OBISPO | GW |
| CA4010007 | PASO ROBLES WATER DEPARTMENT | C | A | SAN LUIS OBISPO | SW |
| CA4000589 | PG&E | NTNC | A | SAN LUIS OBISPO | SW |
| CA4000225 | PHILLIPS 66 COMPANY, SANTA MARIA FACILIT | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010008 | PISMO BEACH WATER DEPARTMENT | C | A | SAN LUIS OBISPO | SWP |
| CA4090007 | PISMO RANCH RECYCLED WATER | NP | A | SAN LUIS OBISPO | |
| CA4000774 | PLEASANT VALLEY ELEMENTARY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000800 | PORT SAN LUIS HARBOR DISTRICT | NTNC | A | SAN LUIS OBISPO | SWP |
| CA4000698 | POZO SALOON | NC | A | SAN LUIS OBISPO | GW |
| CA4000684 | RAGGED POINT INN | NTNC | A | SAN LUIS OBISPO | GU |
| CA4000653 | RANCHO COLINA MOBILE HOME PARK | C | A | SAN LUIS OBISPO | GW |
| CA4000771 | RANCHO NIPOMO WATER COMPANY | C | A | SAN LUIS OBISPO | GW |
| CA4000661 | RANCHO OAKS MOBILE PARK | NP | A | SAN LUIS OBISPO | GW |
| CA4000803 | RANCHO SALINAS MBWC | C | A | SAN LUIS OBISPO | GW |
| CA4000654 | RESTHAVEN MOBILE HOME PARK | C | A | SAN LUIS OBISPO | GW |
| CA4000750 | RIM ROCK WATER COMPANY | C | A | SAN LUIS OBISPO | GW |
| CA4000655 | RINCONADA TRAILER PARK | NC | A | SAN LUIS OBISPO | GW |
| CA4000523 | S & T MUTUAL WATER COMPANY | C | A | SAN LUIS OBISPO | GW |
| CA4000711 | SAN LUIS BUSINESS PARK | NTNC | A | SAN LUIS OBISPO | GW |
| CA4090008 | SAN LUIS OBISPO CSA NO. 18 | NP | A | SAN LUIS OBISPO | |
| CA4010009 | SAN LUIS OBISPO WATER DEPARTMENT | C | A | SAN LUIS OBISPO | SW |
| CA4000635 | SAN LUIS WATER & POWER | NP | A | SAN LUIS OBISPO | GW |
| CA4010010 | SAN MIGUEL COMMUNITY SERVICES DISTRICT | C | A | SAN LUIS OBISPO | GW |
| CA4010003 | SAN MIGUELITO MWC | C | A | SAN LUIS OBISPO | SWP |
| CA4000699 | SAN PASO TRUCK STOP | NC | A | SAN LUIS OBISPO | GW |
| CA4000703 | SAN SIMEON CREEK RANCH | NC | A | SAN LUIS OBISPO | GW |
| CA4000568 | SAN SIMEON CSD | C | A | SAN LUIS OBISPO | GW |
| CA4090014 | SAN SIMEON RECYCLED WATER | NP | A | SAN LUIS OBISPO | |
| CA4000767 | SANTA LUCIA SCHOOL | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000656 | SANTA MARGARITA KOA | NC | A | SAN LUIS OBISPO | GW |
| CA4000714 | SANTA MARGARITA RECREATION AREA | NC | A | SAN LUIS OBISPO | GW |
| CA4000783 | SANTA MARIA SPEEDWAY | NC | A | SAN LUIS OBISPO | GW |
| CA4000802 | SANTA YSABEL RANCH MWC | C | A | SAN LUIS OBISPO | GW |
| CA4000620 | SATCOM WATER SUPPLY--CAMP ROBERTS | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000223 | SKYLINE FLOWER GROWERS & SHIPPERS | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010028 | SLO CSA NO. 16 - SHANDON | C | A | SAN LUIS OBISPO | GW |
| CA4010025 | SLO CWD NO. 10 - CAYUCOS WTP | C | A | SAN LUIS OBISPO | SW |
| CA4010024 | SLO CWWD NO. 23 - SANTA MARGARITA | C | A | SAN LUIS OBISPO | GW |
| CA4000753 | SLO PARTNERS | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010901 | SLOCSA #10A - CAYUCOS | C | A | SAN LUIS OBISPO | SWP |
| CA4000789 | SPANISH LAKES MUTUAL WATER CO | C | A | SAN LUIS OBISPO | GW |
| CA4000208 | SPEEDLING, INC | NTNC | A | SAN LUIS OBISPO | GW |
| CA4090011 | STRASBAUGH RECYCLED WATER | NP | A | SAN LUIS OBISPO | |
| CA4000777 | STRASBAUGH, INC | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000702 | SUNSET DRIVE-IN SNACK BAR | NC | A | SAN LUIS OBISPO | GW |
| CA4000658 | SWEET SPRINGS MOBILE PARK | NP | A | SAN LUIS OBISPO | GW |
| CA4000689 | SYCAMORE MINERAL SPRINGS RESORT | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000678 | TALLEY FARMS LABOR HOUSING | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000216 | TANK FARM BUSINESS PARK | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000726 | TANK FARM INDUSTRIAL PLAZA | NTNC | A | SAN LUIS OBISPO | GW |
| CA4010019 | TEMPLETON CSD | C | A | SAN LUIS OBISPO | GW |
| CA4000749 | TERRA DE ORO WATER COMPANY | C | A | SAN LUIS OBISPO | GW |
| CA4000205 | TIGER WATER SUPPLY | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000213 | TOYOTA SAN LUIS OBISPO | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000659 | TRI COUNTIES CLUB | NC | A | SAN LUIS OBISPO | GW |
| CA4000804 | TRUMPET VINE CATERING | NC | A | SAN LUIS OBISPO | GW |
| CA4000806 | VACHELL WATER SYSTEM | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000765 | VARIAN RANCH MUTUAL WATER | C | A | SAN LUIS OBISPO | GW |
| CA4000829 | VINES R.V. RESORT | NC | A | SAN LUIS OBISPO | GW |
| CA4000504 | VISTA DE LAS FLORES WATER | NP | A | SAN LUIS OBISPO | GW |
| CA4000670 | WALNUT HILLS MUTUAL WATER CO | C | A | SAN LUIS OBISPO | GW |
| CA4000728 | WHITSON INDUSTRIAL PARK | NTNC | A | SAN LUIS OBISPO | GW |
| CA4000506 | WOODLAND PARK MUTUAL WATER CO | C | A | SAN LUIS OBISPO | GW |
| CA4010081 | WOODLANDS DEVELOPMENT | C | A | SAN LUIS OBISPO | GW |
| CA4090009 | WOODLANDS DEVELOPMENT RECYCLED WATER | NP | A | SAN LUIS OBISPO | |
| CA4000717 | 200 SUBURBAN ROAD WATER SUPPLY | NTNC | I | SAN LUIS OBISPO | GW |
| CA4000786 | 7X YOUTH RANCH | NP | I | SAN LUIS OBISPO | GU |
| CA4000756 | AMERICAN CANYON WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000220 | AT&T CORP - CA1059 | NP | I | SAN LUIS OBISPO | GW |
| CA4000311 | ATASCADERO LAKE - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4010020 | AVILA BEACH COUNTY WATER DIST | NP | I | SAN LUIS OBISPO | |
| CA4000512 | BELLA VISTA MOBILE LODGE | C | I | SAN LUIS OBISPO | GW |
| CA4000681 | BLACK LAKE GOLF COURSE - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000763 | BUTTONWOOD INDUSTRIAL PARK | NP | I | SAN LUIS OBISPO | |
| CA4000601 | CALIFORNIA CITIES WATER CO - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000602 | CALIFORNIA CITIES WATER CO - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000828 | CALIFORNIA VALLEY SOLAR RANCH | NP | I | SAN LUIS OBISPO | |
| CA4000719 | CALIFORNIA VALLEY WATER SYSTEM - INACTIV | NP | I | SAN LUIS OBISPO | |
| CA4000727 | CAMP WANTALA -INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000807 | CHEVRON | NP | I | SAN LUIS OBISPO | GW |
| CA4000761 | COPELAND'S DISTRIBUTION CENTER | NP | I | SAN LUIS OBISPO | GW |
| CA4000567 | COUNTY WATERWORKS | NP | I | SAN LUIS OBISPO | |
| CA4000641 | CREEKSIDE COMMERCIAL CENTER | NP | I | SAN LUIS OBISPO | GW |
| CA4000217 | CROSSROADS/ HOUSE OF PRAYER | NP | I | SAN LUIS OBISPO | GW |
| CA4000735 | CRYOLAB INCORPORATED - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000636 | CUESTA MOTEL APARTMENTS - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4010029 | CYPRESS RIDGE W.S. | NP | I | SAN LUIS OBISPO | |
| CA4000676 | DANA ELEMENTARY SCHOOL | NP | I | SAN LUIS OBISPO | |
| CA4000710 | DANA ICE COMPANY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000204 | DE ROYAL LMB - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000776 | DESIGN ALLIANCE - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000646 | DOUBLE J MOBILE ESTATES | NP | I | SAN LUIS OBISPO | |
| CA4000751 | ERNIE BALL, INC | NP | I | SAN LUIS OBISPO | GW |
| CA4010831 | ESTRELLA CORRECTIONAL FACILITY | NP | I | SAN LUIS OBISPO | |
| CA4000690 | GERALD E BREWSTER - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000724 | GOODWILL INDUSTRIES | NP | I | SAN LUIS OBISPO | |
| CA4000645 | GRANDE MOBILE MANOR | NP | I | SAN LUIS OBISPO | |
| CA4000694 | HARMONY WATER WORKS | NP | I | SAN LUIS OBISPO | GW |
| CA4000633 | HEARST STATE BEACH | NP | I | SAN LUIS OBISPO | |
| CA4000569 | HEARST STATE HIST. MONUMENT | NP | I | SAN LUIS OBISPO | |
| CA4000764 | HEDGER WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000758 | HI MOUNTAIN WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000638 | HOUSE OF PRAYER | NP | I | SAN LUIS OBISPO | |
| CA4000677 | KEEP OCEAN | NP | I | SAN LUIS OBISPO | |
| CA4000826 | L & L CASS | NP | I | SAN LUIS OBISPO | |
| CA4000759 | LAPANZA CAMPGROUND WATER - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000712 | LOPEZ CANYON CONFERENCE GROUND - INACTIV | NP | I | SAN LUIS OBISPO | |
| CA4000769 | LOPEZ TROUT FARM - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000608 | MESA MUTUAL WATER COMPANY | NP | I | SAN LUIS OBISPO | GW |
| CA4000745 | MOE WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000665 | MORRO BAY MUTUAL WATER CO | NP | I | SAN LUIS OBISPO | GW |
| CA4000651 | MUSTANG MOBILE VILLAGE - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000609 | NIPOMO MESA MWC - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000687 | OAK PARK MANOR | NP | I | SAN LUIS OBISPO | |
| CA4000746 | OUTLAW RANCH WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000696 | P G & E COMPANY SERVICE CENTER - INACTIV | NP | I | SAN LUIS OBISPO | |
| CA4000718 | PACIFIC BELL SE-164 | NP | I | SAN LUIS OBISPO | |
| CA4000739 | PEPPERTREE PARK WATER SUPPLY | NP | I | SAN LUIS OBISPO | GW |
| CA4000742 | PHILLIPS ELEMENTARY SCHOOL - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000706 | PIEDRAS BLANCAS WATER SUPPLY | NP | I | SAN LUIS OBISPO | GW |
| CA4000723 | PLUMBERS & STEAMFITTERS - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000721 | PORT-A-PORT WEST - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000762 | POZO STATION WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000666 | REDWIND FOUNDATION - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000603 | RHODES RANCHO | NP | I | SAN LUIS OBISPO | |
| CA4000691 | RIFLE FAIRINGS WT SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000597 | RIVERSIDE MOBILEHOME PARK - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000550 | RURAL WATER COMPANY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4010021 | SAN LUIS OBISPO CSA 1G- BLACK LAKE | NP | I | SAN LUIS OBISPO | |
| CA4000773 | SAN LUIS SOURDOUGH - INACTIVE | NP | I | SAN LUIS OBISPO | GW |
| CA4010302 | SAN SIMEON CREEK STATE BEACH-FORCEDPICME | NP | I | SAN LUIS OBISPO | |
| CA4000218 | SANTA FE AIRPARK | NP | I | SAN LUIS OBISPO | GW |
| CA4000662 | SHANDON COUNTY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000669 | SHANDON REST STOP - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000736 | SLO COUNTY FARM BUREAU | NP | I | SAN LUIS OBISPO | GW |
| CA4010013 | SLO CSA NO. 12 - AVILA BEACH | NP | I | SAN LUIS OBISPO | |
| CA4000657 | SOUTH SHORE VILLAGE CLUB | NP | I | SAN LUIS OBISPO | GW |
| CA4000760 | STONEY CREEK WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000672 | THE HILLHOUSE - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000627 | TRUE WATER SUPPLY | NP | I | SAN LUIS OBISPO | GW |
| CA4000731 | UNION PROPERTIES | NP | I | SAN LUIS OBISPO | GW |
| CA4000743 | UPS - SAN LUIS OBISPO | NTNC | I | SAN LUIS OBISPO | GW |
| CA4000709 | VIA CONDIAS WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000814 | WALLACE WATER SYSTEMS | NP | I | SAN LUIS OBISPO | GW |
| CA4000738 | WHALE ROCK WATER SUPPLY - INACTIVE | NP | I | SAN LUIS OBISPO | |
| CA4000215 | WILLIAMS WATER CO | NP | I | SAN LUIS OBISPO | GW |
| CA4000300 | BROKEN EARTH WINERY | NTNC | P | SAN LUIS OBISPO | GW |
| CA4000766 | CB & I CONSTRUCTORS, INC. | NTNC | P | SAN LUIS OBISPO | GW |
| CA4000827 | HUERHUERO RANCH MUTUAL WATER COMPANY | C | P | SAN LUIS OBISPO | GW |
| CA4000821 | SALISBURY VINEYARDS WATER SYSTEM | NC | P | SAN LUIS OBISPO | GW |