9
electromechanical instrumentation and controls for water and wastewater processing facilities and equipment; electronic monitoring devices for water and wastewater processing facilities and equipment; water and wastewater filter backwash control units; and remote metering and control consoles for water processing plants
11
prefabricated water and wastewater treatment filters; water and wastewater treatment plants; activated carbon water and water treatment units comprising filter underdrains and contactors, and related parts and fittings for industrial, commercial and municipal use; water filtration units; air distributors for water treatment filters used in water and waste water treatment plants for municipal and industrial applications; water purification and waste water treatment units comprising pumps, filters and instrumentation controls and related parts and fittings therefor for industrial and municipal use and in municipal and industrial facilities; agitators for use in industrial and commercial water treatment facilities
37
installation, maintenance and repair of water and wastewater treatment facilities and equipment
42
consultation and research in connection with the design of water and wastewater treatment facilities and equipment; design services for others in the field of water and wastewater treatment facilities and equipment; and engineering services in connection with the design of water and water treatment facilities