General contractor ICREAR discovered extensive structural damage and water loss in the cistern as construction reached its final stages. To rectify the compromised concrete, technicians first applied PENEPLUG, a rapid-setting cementitious grout, to halt active leaks. Workers then utilized PENECRETE MORTAR to seal visible cracks, finishing the process with a coating of PENETRON crystalline material on outer surfaces and tie holes.

According to Rodrigo Monterrubio Solis, Country Manager for PENETRON México, the treatment creates an impermeable barrier that stops moisture and harmful chemicals even under high hydrostatic pressure. The chemical reaction within the concrete creates an insoluble crystalline network that self-heals microcracks, a feature expected to extend the cistern's service life significantly. This NSF-61 certified solution ensures the safety of the drinking water supply for the tower’s residents in the UNESCO World Heritage city.