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...bination dissolved air .oatation and sand .lter treatment system by Krofta Engineering Corp. * Scoop-A-Fish Traveling water screen .sh collection trough by Norair Engineering Corp.

* Farm Gas Former equipment manufacturer now part of Rosewater Engineering Ltd. * Fast Flow® Rotary strainer by Alar Engineering Corp.

* design criteria (1) Engineering guidelines specifying construction details and materials. (2) Objectives, r ...er .sheries, public water supply, and irrigation, identi.ed in state water quality standards that must be achieved and maintained as required under the Clean

* Water Engineering, Inc. * CCS2000™ Clari.er control system by Drexelbrook Engineering Co.

ملف:-Water quality.jpg|thumb|right|Water quality - percent of population using improved water sources by country]] ...ter – water which has been highly purified for specific uses in science or engineering. Often broadly classified as Type I, Type II, or Type III, this category of