METHODOLOGICAL NOTE Wastewater includes not only the amount of water that was abstracted and discharged after use back into the environment, but also runoff rainwater, which flows back to the environment through the sewage system or is captured and discharged directly into rivers, streams and soil.
METODOLOŠKO OPOZORILO Odpadna voda ni le količina vode, ki smo jo načrpali in po uporabi izpustili nazaj v okolje, ampak tudi onesnažena padavinska voda, ki se z betonskih površin zliva nazaj v okolje po kanalizacijskem omrežju ali ki jo zajamemo in izpustimo neposredno v reke, potoke ali zemljo.