Brooklyn Center Public works

A little confusing and concerning when they send out letters to say "they don't know" what the water pipes that lead to the homes in Brooklyn Center are made out of. Isn't there a strict code to follow on installing and MAINTAINING something as IMPORTANT as pipes that transports the main basic need for human beings-water? Very disconcerning. Like how do you not know what the pipes are made of? That sounds like one of the only main jobs of the city that handles the water has. Unacceptable. Period. But they ask the individuals (that aren't qualified at all to inspect this) that live in residential homes to find out themselves what the pipes are made of? This smells unprofessional. Embarrassing area to live in I can say now that I have witnessed that this is even a thing some how.