| Business | Phone |
| Dave's Drilling 23781 Highway 78, Ramona 92065 | (760) 788-0148 |
| San Diego Drilling 24660 E Old Julian Hwy, Ramona 92065 | (760) 789-5658 |
| George Mansolf Engineering 15873 Highway 67, Ramona 92065 | (760) 789-7502 |
| J & N Drilling Co 921 Highway 78, Ramona 92065 | (760) 420-5951 |