The invention relates to an integrated system for saving whitewater and using soapy water in washrooms mainly in housing and especially to be used in bathrooms wherein both the whitewater and drinking water is saved in an integral manner and the soapy water generated from washing under the shower and/or in the bath is used. The invention also relates to elements for collecting, storing, filtering and pumping the soapy water, as part of the system, for using same in the cleaning of bathroom furniture and other general uses.