Apparatus for disinfecting water; apparatus for purifying water; apparatus for softening water; apparatus for the decontaminating water; apparatus for waste water purification; apparatus for water purification; apparatus for water softening; appliances for water filtration (other than machines); domestic water filtering apparatus; filtering installations for water; installations for conditioning water; installations for purifying water; installations for the control of water pollution; installations for the purification of waste water; installations for the recycling (purification) of waste water; installations for the treatment (clarifying) of water; installations for the treatment of drinking water; installations for the treatment of industrial waste water; installations for the treatment of water used in swimming pools; installations for waste water engineering; installations for water filtering; installations for water filtration; installations for water purification; installations for water purifying; installations for water softening; installations for water treatment under osmotic process; machines for purifying water; machines for the treatment (purification) of water; machines for use in the processing (purification) of water; machines for water filtering (purifying); machines for water softening; membrane purifying apparatus for the purification of water; power filters for water purification (other than machines); pressurised water installations; reverse osmosis devices for use in water conditioning apparatus; reverse osmosis devices for use in water conditioning installations; transportable apparatus for processing water; waste water treatment apparatus; water conditioning apparatus; water conditioning installations; water desalinating apparatus; water filtering apparatus; water filtration apparatus; water filtration installations; water purification apparatus; water purification filters; water purification installations; water purification machines; water purifying installations; water purifying machines; water softening apparatus; water softening installations; water softening machines; water treatment apparatus; water treatment apparatus for water purification; water treatment apparatus for water softening; water treatment filters; water treatment units