 Clearwater Tech, LLC | San Luis Obispo | 20–99 | ● ACTIVE |
 Cloacina, LLC | Arroyo Grande | 20–99 | ● ACTIVE |
 Nviro | San Luis Obispo | — | ● ACTIVE |
| SCStarna Cells, INC. | Atascadero | — | ● ACTIVE |
 Western Industrial, LLC | Paso Robles | — | ● ACTIVE |
| PCPeacock Cellars INC. | Arroyo Grande | — | ◐ LIKELY ACTIVE |
| VVVenteux Vineyards | Templeton | — | ◐ LIKELY ACTIVE |
| ATApplied Technologies Center | Paso Robles | 100–499 | ◐ LIKELY ACTIVE |
| NCNewterra Corporation, INC San Luis Obispo | San Luis Obispo | 1–19 | ◐ LIKELY ACTIVE |
| ATA-1 Tank INC Dba A-1 Tank & Welding | Paso Robles | — | ◇ UNVERIFIED |
| AEAndros Engineering Corporation | Paso Robles | — | ◇ UNVERIFIED |
| AVAnza Vineyard Estates Mutual Water Company | San Luis Obispo | — | ◇ UNVERIFIED |
| ATApplied Technologies Assoc. | Paso Robles | — | ◇ UNVERIFIED |
| AEAqua Engineering | San Miguel | — | ◇ UNVERIFIED |
| AGArroyo Grande Community Hospital | Arroyo Grande | — | ◇ UNVERIFIED |
| APAtascadero Police Department | Atascadero | — | ◇ UNVERIFIED |
| ASAtascadero Surgery Center | Atascadero | — | ◇ UNVERIFIED |
| ABAtoll Business Center | San Luis Obispo | — | ◇ UNVERIFIED |
| ACAt&t CORP. - Santa Margarita | Santa Margarita | — | ◇ UNVERIFIED |
| BTBall Tagawa Growers | Arroyo Grande | — | ◇ UNVERIFIED |
| BEBlair Engineering | San Luis Obispo | — | ◇ UNVERIFIED |
| BEBlair Engineering | San Luis Obispo | — | ◇ UNVERIFIED |
| CCCalifornia Conservation Corps | San Luis Obispo | — | ◇ UNVERIFIED |
| CVCalifornia Valley Community Service District | California Valley | — | ◇ UNVERIFIED |
| CCCambria Csd Water Dept. - San Simeon Well Field | Cambria | — | ◇ UNVERIFIED |
| CCCambria Csd Wwtp - Lift Station a | Cambria | — | ◇ UNVERIFIED |
| CSCamp San Luis Obispo | San Luis Obispo | — | ◇ UNVERIFIED |
| CSCayucos Sanitary District Lift Station No. 1 | Cayucos | — | ◇ UNVERIFIED |
| CSCayucos Sanitary District Lift Station No. 2 | Cayucos | — | ◇ UNVERIFIED |
| CSCayucos Sanitary District Lift Station No. 4 | Cayucos | — | ◇ UNVERIFIED |
| CCCentral Coast Water Authority - Edv | San Luis Obispo | — | ◇ UNVERIFIED |
| COCity of Arroyo Grande - Reservoir No. 5 | Arroyo Grande | — | ◇ UNVERIFIED |
| COCity of Arroyo Grande - Vista Del Mar Pump Station | Arroyo Grande | — | ◇ UNVERIFIED |
| COCity of Grover Beach Police Station | Grover Beach | — | ◇ UNVERIFIED |
| COCity of Paso Robles - Dry Creek Well #18 | Paso Robles | — | ◇ UNVERIFIED |
| COCity of Paso Robles - Mesa Lift Station #3 | Paso Robles | — | ◇ UNVERIFIED |
| COCity of Paso Robles - No. River Road Lift Station | Paso Robles | — | ◇ UNVERIFIED |
| COCity of Paso Robles - Orchard Bungalow Booster Sta | Paso Robles | — | ◇ UNVERIFIED |
| COCity of Paso Robles - Thunderbird Wells | Paso Robles | — | ◇ UNVERIFIED |
| COCity of Paso Robles - Tower Well | Paso Robles | — | ◇ UNVERIFIED |
| COCity of Pismo Beach Addie Street Lift Station | Pismo Beach | — | ◇ UNVERIFIED |
| COCity of Pismo Beach Fire Station #63 | Pismo Beach | — | ◇ UNVERIFIED |
| COCity of Pismo Beach - Five Cities Lift Station | Pismo Beach | — | ◇ UNVERIFIED |
| COCity of Pismo Beach Vista Del Mar Lift Station | Pismo Beach | — | ◇ UNVERIFIED |
| COCity of Pismo - Pismo Heights Reservoir & Pump Sta | Pismo Beach | — | ◇ UNVERIFIED |
| COCity of San Luis Obispo Fire Dept. - Station #1 | San Luis Obispo | — | ◇ UNVERIFIED |
| COCity of San Luis Obispo, Police Dept. | San Luis Obispo | — | ◇ UNVERIFIED |
| CSCoastal Surgical Specialists, INC. | Pismo Beach | — | ◇ UNVERIFIED |
| CECoast Elevator | San Luis Obispo | — | ◇ UNVERIFIED |
| CICOSM Inc. | Paso Robles | — | ◇ UNVERIFIED |
