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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 |
| CA0707800 | ALL STAR ACADEMY OF DANVILLE | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706049 | ALOHA CLUB | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706014 | ANCHOR MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707501 | ANGLER S RANCH #3 | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707569 | ANGLERS SUBDIVISION 4 | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0706102 | BAY STANDARDS | NTNC | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707589 | BELLA VISTA WATER SYS | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0706037 | BETHEL BAPTIST CHURCH | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707503 | BETHEL HARBOR | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706042 | BETHEL ISLAND GOLF COURSE & COUNTRY CLUB | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707572 | BETHEL ISLAND MUTUAL WATER CO | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0706054 | BETHEL MARKET | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706032 | BETHEL MISSIONARY BAPTIST | NC | NR | T1 | CONTRA COSTA | GW |
| CA0707588 | BIG OAK MOBILE HOME PARK WATER | C | D1 | TD | CONTRA COSTA | GW |
| CA0710004 | BRENTWOOD | C | D4 | TD | CONTRA COSTA | SWP |
| CA0707570 | BRIDGEHEAD CAFE | NC | NR | T1 | CONTRA COSTA | GW |
| CA0707901 | BRUNS MEMORIAL AMPHITHEATER | NC | NR | There are no treatment plants | CONTRA COSTA | SWP |
| CA0706110 | BYRON AIRPORT | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707521 | BYRON CORNERS INC | NC | NR | T1 | CONTRA COSTA | GW |
| CA0707595 | BYRON INN | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706022 | BYRON UNITED METHODIST | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707598 | CAMINO MOBILEHOME | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707620 | CANYON SCHOOL | NTNC | D1 | T1 | CONTRA COSTA | GW |
| CA0707594 | CASA MEDANOS WATER SYSTEM | C | D1 | TD | CONTRA COSTA | GW |
| CA0710011 | CCWD/BRENTWOOD WTP | C | NR | T5 | CONTRA COSTA | SWP |
| CA0790002 | CENTRAL CONTRA COSTA SANITARY DISTRICT | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0710001 | CITY OF ANTIOCH | C | D4 | T5 | CONTRA COSTA | SW |
| CA0790005 | CITY OF BRENTWOOD RECYCLING PROJECT | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0710006 | CITY OF MARTINEZ | C | D3 | T5 | CONTRA COSTA | SWP |
| CA0710008 | CITY OF PITTSBURG | C | D4 | T5 | CONTRA COSTA | SWP |
| CA0707603 | CLAYTON PALMS WATER | C | D1 | There are no treatment plants | CONTRA COSTA | SWP |
| CA0707517 | COLONIA SANTA MARIA | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707542 | CONCORD MT DIABLO TRAILRIDE ASSOC. | NC | D1 | TD | CONTRA COSTA | GW |
| CA0710003 | CONTRA COSTA WATER DISTRICT | C | D5 | T5 | CONTRA COSTA | SW |
| CA0706031 | COUNTRY JUNCTION DELI | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706018 | CRUISER HAVEN MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0790004 | DDSD RECYCLING PROJECT | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0707509 | DELTA BAR AND GRILL | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707573 | DELTA MUTUAL WATER COMPANY | C | D1 | TD | CONTRA COSTA | GW |
| CA0706056 | DELTA SPORTSMAN | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0710007 | DIABLO WATER DISTRICT | C | D3 | T2 | CONTRA COSTA | SWP |
| CA0707615 | DOUBLETREE RANCH WATER SYSTEM | C | D1 | T1 | CONTRA COSTA | GW |
| CA0707519 | DUTCH SLOUGH WATER WORKS | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0710800 | DWR DELTA FIELD DIVISION - BANKS PP | NTNC | D1 | T2 | CONTRA COSTA | SW |
| CA0790001 | EBMUD | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0707644 | EBRPD ALHAMBRA | NC | D1 | TD | CONTRA COSTA | GW |
| CA0707502 | EBRPD BLACK DIAMOND MINES | NC | D1 | TD | CONTRA COSTA | GW |
| CA0706111 | EBRPD LITTLE HILLS | NC | D1 | TD | CONTRA COSTA | GW |
| CA0707900 | EBRPD MORGAN TERRITORY | NC | D1 | TD | CONTRA COSTA | GW |
| CA0707643 | EBRPD OLD BRIONES REGIONAL PARK | NC | D1 | TD | CONTRA COSTA | GW |
| CA0706112 | EBRPD ROUND VALLEY WATER SYSTEM | NC | D1 | TD | CONTRA COSTA | GW |
| CA0706029 | EXCELSIOR MIDDLE SCHOOL | NTNC | D1 | TD | CONTRA COSTA | GW |
| CA0706005 | FARRAR PARK PROPERTY OWNERS | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707523 | FLAMINGO MOBILE MANOR | C | D1 | TD | CONTRA COSTA | GW |
| CA0707575 | FRANKS MARINA | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0706059 | GAS N SAVE | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707625 | GOLDEN EAGLE SMALL WATER SYSTEM | NTNC | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0710002 | GOLDEN STATE WATER COMPANY - BAY POINT | C | D3 | T1 | CONTRA COSTA | SWP |
| CA0706034 | HOLLAND RIVERSIDE MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707547 | KNIGHTSEN COMMUNITY WATER SYSTEM | C | D1 | TD | CONTRA COSTA | GW |
| CA0706028 | KNIGHTSEN ELEMENTARY SCHOOL | NTNC | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0790003 | LAMORINDA RECYCLED WATER PROJECT | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0707534 | LINDQUIST LANDING MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0701707 | LOS VAQUEROS INTERPRETIVE CENTER | NC | D1 | T2 | CONTRA COSTA | SW |
| CA0701706 | LOS VAQUEROS MARINA BLDG | NC | D1 | T2 | CONTRA COSTA | SW |
| CA0707568 | MACS OLD HOUSE | NC | NR | T1 | CONTRA COSTA | GW |
| CA0707564 | MARIN FOOD SPECIALTIES | NC | D1 | T1 | CONTRA COSTA | GW |
| CA0707608 | MARINA MOBILE MANOR | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707532 | MCAVOY YACHT HARBOR | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707585 | MORAGA HEIGHTS MUTUAL WATER | C | D1 | T1 | CONTRA COSTA | GW |
| CA0710300 | MOUNT DIABLO STATE PARK | NC | NR | Operator is not required | CONTRA COSTA | GW |
| CA0790007 | MT. VIEW SANITARY DISTRICT | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0706015 | NEW DOCS MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706030 | NEW LIFE MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706004 | OAKLEY MUTUAL WATER COMPANY | C | D1 | TD | CONTRA COSTA | GW |
| CA0707639 | OLD BORGES RANCH WATER SYS | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706027 | ORIN ALLEN YOUTH REHAB FACILITY | NTNC | D1 | TD | CONTRA COSTA | GW |
| CA0707545 | ORWOOD RESORT | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707576 | PLEASANTIMES MUTUAL WATER CO | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0710010 | RANDALL-BOLD WATER TREATMENT PLANT | C | NR | T5 | CONTRA COSTA | SWP |
| CA0707553 | RIVERVIEW MOBILE HOMES | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707577 | RIVERVIEW WATER ASSOCIATION | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707601 | RUSSOS MOBILE PARK | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707556 | SANDMOUND MUTUAL | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707597 | SANDY POINT MOBILE HOME PARK | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707574 | SANTIAGO ISLAND VILLAGE | C | D1 | There are no treatment plants | CONTRA COSTA | GW |
| CA0707592 | SUGAR BARGE MARINA | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707550 | SUNSET HARBOR | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707915 | TESS FARM MARKET | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706050 | THOMAS DENOVA LLC WATER SYSTEM | NTNC | D1 | TD | CONTRA COSTA | GW |
| CA0710009 | TOWN OF DISCOVERY BAY | C | D3 | T2 | CONTRA COSTA | GW |
| CA0790009 | TOWN OF DISCOVERY BAY | NP | There are no treatment plants | CONTRA COSTA | ||
| CA0706055 | TUGS | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0706045 | WAHL FAMILY WATER SYSTEM | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707623 | WILCOX STATION RANCH | C | D1 | TD | CONTRA COSTA | GW |
| CA0707617 | WILDWOOD ACRES RESORT | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707613 | WILLOW MOBILE HOME PARK | C | D1 | TD | CONTRA COSTA | GW |
| CA0707507 | WILLOW PARK MARINA | C | D1 | TD | CONTRA COSTA | GW |
| CA0707630 | WILLOWEST MARINA WS | NC | NR | There are no treatment plants | CONTRA COSTA | GW |
| CA0707602 | BEACON WEST | C | Missing treatment classification in SDWIS | CONTRA COSTA | GW | |
| CA0707543 | BRENTWOOD MISSIONARY BAPTIST | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0707526 | CASA DEL RIO WATER SYSTEM | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0708006 | CECCHINI WATER | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0706105 | D ANNA YACHT CENTER *CL 2005 | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0706101 | GOLF CLUB AT RODDY RANCH | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0707558 | HERTZ WATER SYSTEM | C | There are no treatment plants | CONTRA COSTA | GW | |
| CA0706040 | LAST RESORT & MARINA LLC | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0706106 | LITTORNO & PANFILI WATER SYSTEM | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0706108 | LONE TREE MEDICAL & DENTAL | NC | Missing treatment classification in SDWIS | CONTRA COSTA | GW | |
| CA0706011 | PARK MARINA *CL 10/29/15 | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0702185 | SUES SWIM SCHOOL | NC | There are no treatment plants | CONTRA COSTA | GW | |
| CA0790006 | IRONHOUSE SD WATER RECYCLING FACILITY | NP | There are no treatment plants | CONTRA COSTA |