Proportion of wastewater (cumulative) in the water from municipal sewage treatment plants in North Rhine-Westphalia (2020)

Municipal wastewater proportions in the body of water, as of December 31, 2020: In order to be able to assess the influence of wastewater from municipal sewage treatment plants (KA) on the condition of the water bodies, the wastewater proportion of the municipal sewage treatment plant was calculated across the board based on the discharge parameters mean low water discharge (MNQ) and Median discharge (0.5 MQ ~ Q183) and, on the other hand, the cumulative municipal wastewater share based on the discharge parameters mean low water discharge (MNQ) and median discharge (0.5 MQ ~ Q183) in the waters are determined, with the aim of a first Approximately determine the relevant locations under the influence of a wastewater discharge. The cumulative municipal wastewater share is understood to mean the wastewater share of the sewage treatment plant at the discharge point, including the proportions of all incoming sewage treatment plants located above, based on the mean low water discharge or median discharge (0.5 MQ ~ Q183) in the body of water.