A borehole (pozo or sondeo) is the most reliable water source for a rural property, but it is also the most uncertain spend: nobody knows exactly how deep the water is until the rig finds it. Local knowledge is worth paying for.
Quotes are usually by the metre. Ask what the driller expects in your area, what happens if they reach their estimate without water, and what’s included: casing, the pump, cabling, the pump controller and a water analysis often aren’t.
New wells need authorisation from the water authority for your area, normally the river basin authority. A driller who works locally will know the process and how long it takes.
Questions to ask before you sign
- What depth do you expect in my area, and why?
- What is the price per metre?
- What happens if you don’t find water at that depth?
- Are the casing, pump, controller and water test included?
- Will you handle the authorisation paperwork?