The volume of water consumed by a household depends on many factors, including among others: the size and profile of household, category of flat furnishing in water supply and sewerage facilities, price for water supply and sewage disposal and the dwellers' habits. Many authors think that the method of sewage disposal is also important. The paper analyses the influence of household connection to the combined sewerage system on the amount of water consumption. Daily water consumption was determined per household and per one inhabitant. Analysed were 20 households located at Mszana Górna village in the Limanowa poviat. The studied period covered 7 years. These comprised 3 years prior to the households' connection, 3 years following the connection and one transitional year when the connection was being accomplished. Before the sewerage system constructing the households discharged the sewage to septic tanks from which after pre-treatment it ran off to roadside ditches or sank into the ground. The analysis did not reveal any significant influence of the houses connection to the combined sewerage system on water consumption amount. Consumption per household increased only by 0.4% and consumption per one inhabitant raised by 2.2%. Both values may be considered negligible because they fall within error limit of water meter indications.