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The amount of cities with water problems will continue to grow because of the old pipes throughout the infrastructure of America. In many of the cities that have complained of a problem on the water ended up being ignored my their city officials and told the water was safe. City officials need to start being proactive when hearing of such an extreme problem that can effect so many lives.
Image taken from this website.
Newark NJ, Chicago, Detroit, Baltimore, Pittsburgh, Washington DC, Milwaukee, etc.