Industrial and municipal wastewater requiring treatment discharged into waters or into the ground during the year

Some data at gmina and poviat levels are excluded from public release for methodological reasons. There are situations where treated wastewater is greater than the total wastewater, which is due to the estimation methods of determining the amount of municipal wastewater discharged through the sewage network, as well as situations where wastewater is discharged from plants to the treatment plant by a separate collector, i.e. bypassing the sewage network. Indicators relating to the number and structure of the population (gender, age group) since 2020 have been recalculated in accordance with the balance sheet prepared on the basis of the results of the National Census 2021. Indicators used for the calculations of the geodesic area include the change of the of area the country introduced in 2023. The change involves including the Bay of Puck and a part of the Bay of Gdańsk to the area of internal sea waters. Detailed information is to be found in the group: Geodetic area of the country.