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).
PAGE OF FOUR NATIONAL DRINKING WATER CLEARINGHOUSE three What are other softening alternatives? The selection of lime, lime-soda ash, or caustic
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NATIONAL STANDARDS FOR DRINKING WATER, National standards for drinking water treatment, Water, Utilities, Drinking water, Lead Standard, Philadelphia, Water quality, Philadelphia Water, Annual Water Quality Report, Drinking Water Quality, PROJECT PROFILE ON PACKAGED DRINKING, Conditions favouring coliform and HPC bacterial, Drinking, UTILITIES DEPARTMENT