Apparatus for descaling water; Apparatus for disinfecting water; Apparatus for filtering water; Apparatus for softening water; Apparatus for supplying water; Apparatus for the chlorination of waste water; Apparatus for the decontaminating water; Apparatus for waste water purification; Appliances for water filtration (other than machines); Bacteriostatic water treatment installations; Chemical installations for conditioning drinking water; Chlorinating units (water purifying apparatus and machines); Devices for the separation of impurities from water (purification); Domestic water filtering apparatus; Domestic water filtering units; Drinking water filters; Electronic apparatus for the purification of water; Filter apparatus for water supply installations; Filters for drinking water; Industrial waste water purification plants; Installations for conditioning water; Installations for purifying water; Installations for the recycling (purification) of waste water; Installations for waste water engineering; Installations for water treatment under osmotic process; Machines for processing (purifying) water; Membranes for the filtration of water; Pressure tanks (water); Reverse osmosis devices for use in water conditioning installations; Reverse osmosis elements for reducing the salt content of water; Transportable apparatus for processing water; Waste water treatment installations; Water disinfection apparatus; Water filtering apparatus; Water filters for industrial purposes; Water purification apparatus; Water regulating apparatus; Water treatment apparatus for water purification; Watering installations, automatic