The paper assesses the development level of water and sewerage infrastructure in the Kujawsko-Pomorskie voivodeship in the period of 1999-2014. The analysis included the infrastructure in 144 communes. The outcome has ascertained large irregularity in water and sewerage network coverage saturation in particular years, especially in southern and eastern parts of the voivodeship. The growth dynamics of the sewerage network surpasses the water network growth in the analyzed period but still does not reach the development degree of the water system. The Kujawsko-Pomorskie voivodeship has the second densest water network in Poland. However, taking into account sewerage network density, it is ninth. Disproportion in both networks development degree is mitigated by building household sewage treatment plants, especially in the communes with lower population density, in which building sewerage network is too expensive. In 2014 two communes had no sewerage network at all and two others had that network very sparse (over 100 km of water network per 1 km of sewerage network). The most intense water and sewerage infrastructure development was recorded in 2007 and 2014, mainly in rural and urban-rural areas. It is related to increased expenditure on water and sewerage infrastructure within the Regional Operational Programme in the ...
