The list covers Castellón de la Plana, Almassora, Almenara and Vila-real. Within 20 km of Castellón de la Plana are Perforaciones Sondega, Pozos Jorge Sondega and Perforaciones Aquasond. If you’re inland, ask each firm whether your village is inside their normal working area before you book a visit.
None of these firms has 20 Google reviews yet, so lean on references from past customers. The average rating across the list is 4.2 (firms with at least five reviews). Read the low-star reviews as well as the high ones: how a firm answers a complaint tells you a lot.
Ask for the price per metre and the expected depth, and check what the quote leaves out: casing, pump, cabling and the water analysis often appear later. A firm that has drilled in your valley before is worth a lot.
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?