Torre depósito de agua is a water tank and filtration firm based in Benahavís, in Málaga province. Its Google Business Profile lists it as “Water utility company”.
It has a Google rating of 5.0 from 1 review. That is too few reviews to say much yet, so ask for references.
If you want comparison quotes, the nearest other water tank and filtration firms are Balsa de agua in Benahavís (5 km). Getting two or three quotes is normal for this kind of work.