The aim of this article was to evaluate water and sewage economy development in Podlaskie Voivodeship in comparison to the rest of the country. Moreover, best developing district in analysed area have been marked out. In the study were used Central Statistical Office of Poland data from 2008–2015 in a range of waterworks, sewerage and sewage plants. Recent years we are observing cesspit amount decreasing tendency in favour of sewage systems and household sewage treatment plants. In 2008–2015 water and sewage economy in Poland was expanded in 150 840 Household Sewage Treatment Plants and 54 876.4 km of sewage systems. Podlaskie Voivodeship took 12 place in the country in respect of newly built waterworks (one position increased) and last place in respect of sewerage length.