The variation in water hardness throughout Iowa influences not only the taste and aesthetics of the water but also the efficiency of soaps and detergents, plumbing maintenance, and the lifespan of appliances that utilize water. Given the state’s geological diversity, water hardness is not uniform, highlighting the need for localized water treatment solutions and ongoing monitoring of water quality.
In the provided data, the water hardness levels show substantial variations across different cities in Iowa. Among the cities for which data is reported, the highest water hardness level is recorded in Hiawatha with a hardness of 291.0 ppm, 17.0 gpg. Conversely, the city with the lowest recorded water hardness level is Iowa City, reporting a hardness of 107.5 ppm, 6.3 gpg.