The incompetence is even more pronounced in municipal water systems. Some of the engineers who oversee these installations are scary. Young engineers, right out of college who think they already know everything, don't realize they have decades of learning to do. But because they have an engineering degree they double down on some really wrong ideas. There are the obvious problems like Flint, MI where they did not maintain water quality as needed. But there are tons of bad designs causing negative pressure, stagnate water, and other things that can cause Legionnaires disease, and other problems. Not to mention the waste of money on pumps and systems that are not designed correctly. Even water towers are obsolete and a waste of taxpayer money, but they keep putting up more and repairing the old ones at our expense.
It is much easier and safer for me to keep up with my own water well than to worry about what one of many, many other hands could be doing to my water. Where I live a lot of people in the city are now drilling wells. The water taste better, costs less, and no one else is in control.