| Business | Phone |
| Mc Lean & Williams Inc 878 El Centro Ave, Napa 94558 | (707) 255-6450 |
| D Bess Pump & Well 1115 Mount George Ave, Napa 94558 | (707) 253-0574 |
| Huckfeldt Well Drilling 2110 Penny Ln, Napa 94559 | (707) 255-7923 |
| Pulliam Well Drilling 2877 Piedmont Ave, Napa 94558 | (707) 224-9396 |
| Pulliam Well Drilling 5110 State Highway 128, Napa 94558 | (707) 258-8973 |