If you're so upset with dirty water then why not buy bottled water or be done with it? Or, better yet, install your own sewage treatment plant in your back yard.
If something is not right, make it right for yourself and don't waste valuable energy trying to make the world conform to your standards. That's being co-dependant. You couldn't possibly have control over what the government does with it's water supply or the municipalities for that matter. Accept it and follow the principles of the Serenity Prayer from AA. You can't change it so accept it and move on. You can buy all the wonderful bottled water you like, install a great filter from your home, or better yet, don't drink water at all and drink only the finest vodka, gin or bourbon every day. That will do two things, give you a pure product to drink and sterilize everything that comes in contact with your body. Alcohol, especially grain alcohol of especially high per centages will kill just about any bug or pathogen out there.
I remember one year when everyone in the family was getting the flu, I had a few whiskeys and kept the pesky flu at bay for a long, long time.
Water isn't the only thing to drink. In fact sometimes it's the worse thing for you. When Humphrey Bogart filmed the Africa Queen, he was one of the few cast members who did not get sick because he didn't drink the water, but drank the booze instead!
Where are gone strong willpower and personal pride?