Apparatus for filtering drinking water; Chlorinating units for water treatment; Electrolytic water generators for electrically decomposing tap water to generate electrolytic water and for removing chlorine odor from tap water; Filtering units for domestic use, etc.; Filtration unit for filtering and treating cooking oil being part of commercial deep fryers; Swimming pool chlorinating apparatus; Swimming pool water cleaning and filtering units; Water filtering units for aquariums; Water filtration and purification units and replacement cartridges and filters therefor; Water purification machines; Water purifying apparatus and machines; Water purifying apparatus for household purposes; Water purifying units, for potable water for domestic use, etc.; Water treatment equipment, namely, water filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units