Advanced Corrosion Control, Softening & Process Math
This guide builds on Arizona's Grade 1 fundamentals to cover the advanced treatment chemistry and process math tested at Grade 2 through Grade 4.
Why corrosion control dominates Arizona's advanced exams
Much of Arizona's drinking water is drawn from groundwater aquifers across the state's Active Management Areas, supplemented by Central Arizona Project (CAP) water conveyed from the Colorado River. Both source types are frequently low in alkalinity and can be corrosive, and CAP surface water in particular requires careful corrosion-control adjustment as it is blended into groundwater-dependent distribution systems. Advanced-grade Arizona operators are expected to design and troubleshoot orthophosphate and pH/alkalinity adjustment programs used to keep water non-corrosive to lead- and copper-bearing plumbing under the Lead and Co