Lime Softening Quicklime that has been combined with water. Also called slaked lime or calcium hydroxide. Tags: Distribution System, Hydrated Lime, Lime Softening, Water Treatment Read more articles Previous PostDistribution System Next PostWater Quality You Might Also Like Coagulation & Flocculation February 5, 2017 What is the difference between a CEU, a PDH, and a Contact Hour? March 7, 2013 January 24, 2017 Post author: Post published:January 28, 2017 Post category:Certification Exams / Distribution / Water Treatment