Electrolytic water generators for electrically decomposing tap water to generate electrolytic water and for removing chlorine odor from tap water; Filters for drinking water; Filters, heaters and pumps sold in combination for use in swimming pools; Water filtration and purification units and replacement cartridges and filters therefor; Water purification units; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Water purifying units, for potable water for domestic, commercial or industrial use; Water treatment equipment, namely, water filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units