Source Water Click on the “+” symbols to learn about aquifers. Tags: Aquifers, Certification Exam Prep, Distribution System, Source Water, Water Treatment Read more articles Previous PostFiltration Next PostFiltration You Might Also Like Studying? January 11, 2016 State Certification Information | California Wastewater Operator Certification Program July 13, 2018 Fire Hydrants & Valves January 19, 2017 Post author: Post published:January 19, 2017 Post category:Certification Exams / Distribution / Water Treatment