How do I contact the people who are responsible for cleaning the tap water?

How would I contact the water treatment plant in my city???? Or whoever the people are who are in charge of cleaning the water for everyone?|||The liberals 4 for keeping murders from the death penalty,they shi! and piss in our water ways.And the department of environment protection 1800-777-0456.|||Look in the phone book under your cities name and scroll down until you hit Water Department, then call them. Try to make sure you know what you are talking about. Most calls are about rusty water and all you need to do is run the water in your home until it clears - this is usually caused by having to change out a water line.