| Business | Phone |
| Art Widner Drilling 28537 Valley Center Rd, Valley Center 92082 | (760) 749-2681 |
| Fain Drilling & Pump Co Inc 12029 Old Castle Rd, Valley Center 92082 | (760) 749-0701 |
| Stehly Brothers Drilling Inc 13268 Mcnally Rd, Valley Center 92082 | (760) 742-3668 |