Apparatus for filtering drinking water; Desalination units; Drainage water treatment tanks; Environmental control apparatus, namely, particle activators for use in soil remediation, drinking water treatment, municipal and industrial wastewater treatment; External filtering device for use in a local containment area for removing oil and other contaminants from storm drain effluent as it exits storm water systems; Filters and filtering devices for air and gas conditioning; Filters for drinking water; Filters for fluids, namely, for water and area-water solutions; Industrial-water purifying apparatus; Ionization apparatus for the treatment of air; Ionization apparatus for the treatment of liquids and gases for industrial, commercial or agricultural use; Machine that generates purified water from the atmosphere and simultaneously purifies the air; Marine sewage holding tank vent filters; Marine sewage holding tanks; Oil purifying installations; Purification installations for sewage; Regulating accessories for water or gas apparatus and pipes; Sewage disposal plants; Sewage purification apparatus; Sewage purification installations; Sewage treatment plants; Sustainable onsite water recycling and wastewater treatment systems; Thickening and dewatering machines for use in treatment of liquids including water, industrial effluent and sewage; Waste water purification apparatus, installations and tanks; Waste water purification units; Water desalination plants; Water filtering apparatus; Water filtering devices, namely, water purification installations for waste water and sewage consisting of curtains and textile fabrics; Water filtering units for industrial, commercial and agriculture use; Water filters; Water filtration and purification units and replacement cartridges and filters therefor; Water filtration apparatus for the deionization of water; Water ionizers; Water purification and filtration apparatus; Water purification installations; Water purification machines; Water purification tanks; Water purification units; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Water purifiers; Water purifiers for household purposes; Water purifying apparatus; Water sterilisers; Water treatment apparatus, namely, clarification and thickening machines for use in treatment of liquids in the nature of water, waste water and industrial water; Water treatment equipment, namely, water filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units; Water treatment unit for aerating and circulating water