Transcription of Fact Sheet 08 Insert - Water Research
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Fact Sheet 08 Insert - Water Research
PAGE OF FOURNATIONAL DRINKING Water CLEARINGHOUSE oneA NATIONAL DRINKING Water CLEARINGHOUSE FACT SHEETLime SofteningWhat is hard Water ? Hardness in Water is primarily the result ofconcentrations of calcium and , some Water utilities remove calcium andmagnesium to soften the Water and improve itsquality for domestic use. Other ions that pro-duce hardness include iron, manganese,strontium, barium, zinc, and aluminum, butthese ions are generally not present in signifi-cant quantities. Therefore, total hardness isusually defined as the sum of magnesium andcalcium hardness in milligrams per liter (mg/L),as calcium carbonate (CaCO3).
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