How to Get Hard Water Stains Out of Your Toilet

By: Terri Briseno

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  • American Water Works Association. "How Water Works: Lime Softening Removes Hardness-Causing Minerals." 2007. (May 26, 2012)
  • Derringer, Jaime. "The Daily Fix: Remove Hard Water Stains." July 23, 2010. (May 26, 2012)
  • U.S. Dept. of the Interior, U.S. Geological Survey. "Water Hardness." 2012. (May 26, 2012)