Water which gets down on the earth as the form of precipitation (rain, snow, hail). According to the Act on the Environmental Protection, rainwater or meltwater from contaminated, durable surfaces which are included in the sewage network are wastewater.

• Act of 20 July 2017, New Water Law
  Place of publication: (Dz. U. z 2023 r. poz. 1478, z późn. zm.)