Classification one is clean drinking water, Classification two is grey h2o, and Classification three is blackwater. Clean water refers to a source that does not trigger significant hurt to humans, whilst gray water might have some contaminants that can result in sickness or soreness. Blackwater is extremely contaminated with micro https://francisco5gqzi.tribunablog.com/how-to-clean-sewage-in-unaizah-an-overview-45514645