Water supply installations, namely, physical water treatment devices for households and apartments, in the nature of water filters for drinking water, and water filters for personal usage on the go; water conditioning installations; strainers for water lines; and filters for drinking water; none of the aforementioned being for use in connection with water filters, water filter units and/or water filtration installations for pools, swimming pools, spas, steam baths, whirlpools and waterparks