| Van Duzen - Humboldt Co. Parks | Eureka, CA | 551 | 2 | - |
| Yosemite Lakes Community Church | Coarsegold, CA | 551 | 46 | - |
| Meadows Union Elementary School | El Centro, CA | 550 | 41 | Clean |
| El Tejon Middle School | Lebec, CA | 550 | 11 | - |
| Harbor View Mutual Water Company | Kelseyville, CA | 550 | 73 | - |
| Landale Mutual Water Company | Lancaster, CA | 550 | 8 | - |
| Hughes-Elizabeth Lake Unified School Dis | Lake Hughes, CA | 550 | 5 | - |
| Pacific Scientific Energetic Mats. Comp. | Hollister, CA | 550 | 11 | - |
| Mission Oaks Mobile Home Park | San Jose, CA | 550 | 14 | - |
| Dierberg/Star Lane Vineyard | Santa Ynez, CA | 550 | 0 | - |
| San Vicente Water Company | Santa Barbara, CA | 550 | 48 | - |
| Santa Cruz County Fairgrounds | Watsonville, CA | 550 | 14 | - |
| Vineyard RV Park | Vacaville, CA | 550 | 3 | - |
| Patterson Tract Csd | Visalia, CA | 550 | 40 | Clean |
| Rio School Dist/ Rio Real School | Oxnard, CA | 550 | 12 | - |
| Clayton Palms Water | Clayton, CA | 549 | 7 | - |
| Siskiyou Lake Highlands MWC | Mt. Shasta, CA | 549 | 5 | - |
| Calpella County Water District | Ukiah, CA | 548 | 11 | - |
| Bitney Springs Center Water System | Nevada City, CA | 547 | 32 | - |
| Korbel Brothers Winery | Guerneville, CA | 546 | 8 | - |
| Fuller Acres Mutual Water Company | Lamont, CA | 545 | 23 | - |
| Llano del Rio Water Company | Llano, CA | 545 | 2 | - |
| Golden State Water Company - Lake Marie | Rancho Cordova, CA | 545 | 0 | - |
| Chiriaco Summit Water Dist. | Chiriaco Summit, CA | 544 | 40 | - |
| Darr Water Co | Boron, CA | 543 | 42 | - |
| Rio Vista Mobile Home Park | Sacramento, CA | 543 | 14 | - |
| Loma Prieta Jusd-Loma Prieta School | Los Gatos, CA | 542 | 15 | - |
| Lanare Community Services Dist | Coalinga, CA | 540 | 119 | - |
| Sherwood Mobile Home Park | Lancaster, CA | 540 | 10 | - |
| Riverview Mobile Home Estates | Santa Cruz, CA | 540 | 32 | - |
| Woodland Park Mutual Water Co | Arroyo Grande, CA | 538 | 21 | - |
| Woodward Reservoir Water System | Modesto, CA | 537 | 39 | - |
| Gilroy Usd-Rucker School | Gilroy, CA | 536 | 9 | - |
| El Dorado ID - Outingdale | Placerville, CA | 535 | 7 | - |
| Wsl - Surf Ranch | Lemoore, CA | 535 | 0 | - |
| Gabilan WC | Salinas, CA | 535 | 52 | - |
| Sid - Gibson Canyon | Vacaville, CA | 535 | 4 | - |
| Colusa Industrial Properties | Colusa, CA | 533 | 5 | - |
| Occidental Community Services District | Occidental, CA | 533 | 25 | - |
| Menf-Fouts Springs Cg | Willows, CA | 531 | 0 | - |
| Palms River Resort | Needles, CA | 531 | 9 | - |
| Allensworth Csd | Earlimart, CA | 531 | 95 | - |
| United Pacific #0251 | Long Beach, CA | 530 | 0 | - |
| Windmill Resort | Parker, CA | 530 | 28 | - |
| Sws Land Development Inc | Madera, CA | 529 | 90 | - |
| CSA 42 Oro Grande | San Bernardino, CA | 529 | 2 | - |
| Cazadero Water Company, Inc. (Puc) | Forestville, CA | 525 | 57 | - |
| Castlewood Domestic Water System | Pleasanton, CA | 524 | 6 | - |
| Bridgeport PUD | Bridgeport, CA | 524 | 189 | - |
| North Tahoe PUD - Carnelian Woods | Tahoe Vista, CA | 524 | 4 | - |