When sand and dirt gets inside residential water supply it restricts flow, clogs faucets and showerheads, damages ice makers and water dispensers, clogs sprinklers, builds up in water heaters and more. Source of sand and dirt could be private water well, muni water supply and piping. The easy solution to removing sand and dirt is a LAKOS SandMaster. These NSF certified residential separators can remove sand and dirt easily. There are no cartridges to change or screens to clean. Simply open the purge valve to flush all sand and dirt. Using an optional automated purge valve will make this completely maintenance-free.