“Ranked list of the 10 hardest water cities in America by ppm, from San Jose CA at 350 to Phoenix AZ at 237. Source: MyApartmentWaterQuality.com.”
MyApartmentWaterQuality.com has published a new ranking of the hardest water cities in America. Every number in it comes from the city utility that pumps the water.
New York, NY – September 22, 2026 – MyApartmentWaterQuality.com has published a new ranking of the hardest water cities in America. Every number in it comes from the city utility that pumps the water…