| Business | Phone |
| Central Basin Municipal Water 17140 Avalon Blvd # 210, Carson 90746 | (310) 217-2222 |
| Sanitation Districts-La Cnty 24501 Figueroa St, Carson 90745 | (323) 775-2351 |
| West Basin Municipal Water 17140 Avalon Blvd # 210, Carson 90746 | (310) 217-2411 |