Total quantity of urban wastewater in 2019 increased by 3.5%, relative to the referent period 2018, of which the amount of wastewater discharged into wastewater collecting system increased by 5.3% relative to 2018. The amount of wastewater discharged into septic tanks decreased by 1.2% compared to 2018.
In 2019, treated wastewater decreased by 2.4% compared to 2018 and the most frequently applied method was secondary treatment.