The task will be carried out in the City of Malbork (M) and the City and Sztum (S) within the framework of the Municipal Functional Area Malbork – Sztum (hereinafter MOF) within the framework of the ZPT for the MOF Malbork-Sztum. The task shall include: — construction of an aggregate rain collector together with a system of rainwater retention for the catchment area located within the limits of the city of M-ka in the Wielbark district; — modernisation of the existing system of rainwater drainage through the construction and reconstruction of rain collectors with higher capacity, draining rain and melt water from the water catchment area, located in the city centre Sztum together with the construction of a retention system. 249 m³ The direct objective of the project is the construction of a rain collector. together with a system of rainwater retention for water catchments located within the limits of the city of M in the district of Wielbark and construction and reconstruction of the sensitive section of the drainage. rain. in the S area in order to increase water retention and minimise the effects of extreme climatic phenomena.