Patent ID: 7229550

Claim:
A system for treating potable water transferred from a potable water source to a number of potable water user(s) via a potable water line for a residential, office, public or commercial building, said system comprising: (a) a filter performing filtration of said potable water flowing through said potable water, said filter operating in combination with, (b) a disinfectant chemical feed system comprising: i. at least one source comprising a disinfectant chemical, ii. a potable water flow measuring device providing a signal in proportion to said potable water flow in said potable water line to a proportioning device, iii. said proportioning device receiving said signal from said potable water flow measuring device and sending a signal to at least one disinfectant chemical feed pump, and iv. at least one of said disinfectant chemical feed pump(s), wherein said disinfectant chemical feed pump(s) receive said signal from said proportioning device; such that, the required amount of said disinfectant chemical is directed via said disinfectant chemical feed pump(s) from said disinfectant chemical feed source(s) to said potable water in said potable water line downstream of said filter.