Filtering units for reverse osmosis pre-treatment; Filters for drinking water; Filters for fluids, namely, for water and area-water solutions; Filters made of fiber for water filtration; 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 aquariums; Water filtering units for seawater use; Water filters; Water filtration and purification units and replacement cartridges and filters therefor for reverse osmosis pre-treatment; Apparatus for filtering drinking water; 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; External ballast and bilge water filtering and absorbing device for use in a local containment area for removing aquatic nonindigenous species, oil and other contaminants from the effluent; Swimming pool water cleaning and filtering units