Faucets; Apparatus for filtering drinking water; Dripper irrigation systems, comprised of valves, filters and regulators; 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 for fluids, namely, for water and area-water solutions; Personal water filtering devices in the form of straws; Water filtering apparatus; Water filtering units for domestic, commercial and industrial use; Water filtration and purification units and replacement cartridges and filters therefor; Water filtration and purification units and replacement cartridges and filters therefor for refrigerators, ice makers; Water filtration apparatus for the deionization of water; Water purification and filtration apparatus; Water purification apparatus; Water softening apparatus and installations