| Business | Phone |
| Culligan Soft Water 1150 N 4th St, El Centro 92243 | (760) 352-3737 |
| Hague Quality Water 1013 W State St, El Centro 92243 | (760) 353-9003 |
| J C Lab & Monitoring Svc 1230 Stacey Ave, El Centro 92243 | (760) 353-9396 |
| Lobo Chem 656 W State St, El Centro 92243 | (760) 352-2067 |