How to drill your own well

If you have the equipment to drill your own well then go for it, but the rest of us have to leave it to the professionals. There is a lot we can do to save money though. When you consider that the cost of the average well is around $18,000, it makes sense to save on labor costs any place you can.

We can install the waterline to the house, the control box, the pressure switch and the pressure tank. These all take a lot of time and can save you at least $5,000 if you do the work yourself.

Here's a diagram of how a water well system works.

well diagram


We'll start by adding a 30-amp double pole 240-volt breaker to the breaker box. This will eventually send power to the pump motor.

Don't connect the wires to the breaker yet. We still need to lay the pump wire in the ground, connect it to the pump and we also need to connect the control box.
pressure switch This is a pressure switch that is part of the pressure tank. When the pressure drops below 40 psi, the switch turns the pump motor on. When the pressure in the tank reaches 60psi, it turns the pump motor off. You will use 10-3 Romex from the breaker box to the pressure switch.

well control box

You will need to use 10-3 Romex from the pressure switch to the control box. The control box will have a diagram how to connect the 10-3 from the pressure switch and how to connect the special pump cable. From the control box clear out to the pump in the well, you will use pump cable. It's made special for underground applications and inside water wells.

well casing

The pump wire will feed into the well casing from the ground trench. The cable will run down the well casing to the pump that is under water or submersible.

well pressure

The pump will send water to the pressure tank. The pressure tank keeps pressure in the waterlines so the pump doesn't have to keep running all the time. The pressure tank will keep the cold and hot water lines in the house pressurized.

well pressure tank

drill a well