Depósitos de Agua Monteyor is a water tank and filtration firm based in L' Eliana, in Valencia province. Its Google Business Profile lists it as “Water purification company”.
It has no Google reviews yet, so ask for references from recent customers and, if you can, a finished job you can see.
Other water tank and filtration firms within 20 km include Deposito Delta in Manises (2 km), Depósitos de agua in Godella (7 km), Depósito de agua potable de Xirivella in Xirivella (9 km). Getting two or three quotes is normal for this kind of work.