Most cities do a good job meeting standards, but the parameters of those standards is limited by financial constraints. They filter, settle, coagulate, and disinfect water with chlorine or chloramine and test for a certain number of impurities. Because of the practicalities of usage, it would not be economical to remove all of the impurities.

If cities removed all impurities, we would be fighting fires and watering lawns with pure water. The cost involved would be passed on to the taxpayer, making the cost of water comparable to a second house payment! Economically, removing all, or even significantly increasing the number of impurities removed simply is not economically feasible at the local state, and federal levels.

Pure water is a choice, and the responsibility lies with the homeowner.