What is water hardness?
Water hardness is related to the amount of calcium, magnesium, or iron minerals in the water. The more of these minerals present in the water, the harder the water. Manhattan's water is considered moderately hard. It contains between 5 and 9 grains per gallon (or about 86 to 154 ppm) of hardness. The City of Manhattan softens the water to make it more palatable and to reduce the amount of soap and detergents used by customers. Water hardness of the city's finished water does not stay constant but varies daily depending on the blend mix from the 16 public water supply wells and the treatment process.

Show All Answers

1. Where does the city get its water?
2. How does the city treat our drinking water?
3. What is the quality of our drinking water?
4. Who do I call for water service or disconnect?
5. What is water hardness?
6. What is the fluoride level in the city's drinking water?
7. Can I install my own water service line? Will the Water Department extend the water service line to my house?