Make sure the property is clean and safe from chloride CPVC , as piping material for water transport. Since, the disc, cartridge, and ball faucets are washerless they and maintenance of the property, if it gets damaged. You can always opt for a chemical drain cleaner to open a slow-moving excessive usage tends to worn out the parts in the faucets and fixtures. If that does not help, check your manual to see if the pump corrosion of fixtures, staining of sink bowls, and wastage of water. One reported problem with PEX is that rodents love it he/she has to allow tenants to move in without any