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Hard water and scale

Much of Southern California's water, including imported water, is hard. Calcium and magnesium leave white crust on fixtures and build scale inside water heaters and appliances.

Signs of hard water

  • White crust on faucets, showerheads and glass doors
  • Spots on dishes
  • Popping water heater (scale on the bottom of the tank)
  • Soap that doesn't lather well

Options

OptionWhat it doesKeep in mind
Salt-based softenerRemoves hardness mineralsUses salt and discharges brine; some California communities restrict them, so check local rules first
Salt-free conditionerChanges minerals to reduce scale buildupDoesn't remove hardness; results vary
Point-of-use filtersTreats drinking or shower waterDoesn't protect water heaters or pipes

Your water district's annual water quality report lists hardness for your area, and a home test kit confirms what's at your tap.

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