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1. An analysis of the initial situation of the drainage area of the agglomeration concerned, including at least the following:

(a) a detailed description of the network of collecting systems, the urban wastewater and urban runoff storage and conducting capacities of that network and the existing urban wastewater treatment capacities in case of rainfall;

(b) for combined sewers, a dynamic analysis of the flows of urban wastewater in case of rainfall, based on monitoring data or the use of hydrological, hydraulic and water quality models that take into account state-of-the-art climate projections and including an estimate of the pollution loads of the parameters referred to in Table 1 and, where relevant, Table 2 of Annex I as well as microplastics and relevant pollutants released into receiving waters in case of rainfall;

(c) for separate sewers, a detailed description of the monitoring requirements at relevant points of separate systems where discharges of urban runoff are expected to be polluted as identified under Article 5(2), point (d), to identify relevant and feasible measures as required in point 3 of this Annex.

2. Objectives for the reduction of pollution from storm water overflows, including the following:

(a) an indicative non-binding objective that storm water overflow represents a small percentage that cannot be more than 2 % of the annual collected urban wastewater load calculated in dry weather conditions; this indicative non-binding objective shall be met by:

(i) 31 December 2039 for all agglomerations of 100 000 p.e. and above;

(ii) 31 December 2045 for agglomerations of 10 000 p.e. and above referred to in Article 5;

(b) the progressive reduction of macroplastics.

3. The measures to be taken to achieve the objectives referred to in point 2 in accordance with the deadlines set in that point accompanied with a timeline for the implementation of the measures and a distinction between measures already in place and to be taken. It shall also contain a clear identification of the actors involved and their responsibilities in the implementation of the integrated urban wastewater management plan.

4. When assessing which measures to be taken under point 3, Member States shall ensure that their competent authorities consider at least the following:

(a) preventive measures aimed at avoiding the entry of unpolluted rain waters into collecting systems, including measures promoting natural water retention or rainwater harvesting, and measures aimed at increasing green and blue spaces in urban areas in order to reduce storm water overflows or limiting impermeable surfaces in the agglomerations;

(b) measures to better manage and optimise the use of existing infrastructure, including collecting systems, storage volumes and urban wastewater treatment plants, with the aim of ensuring that releases of untreated urban wastewater or polluted urban runoff into receiving waters are minimised;

(c) where necessary to achieve the objectives referred to in point 2, additional mitigation measures including the adaptation of the infrastructure for the collection, storage and treatment of urban wastewater, such as connecting newly built urban areas to separate sewers, where relevant, or the creation of new infrastructure with priority given to green and blue infrastructure such as vegetated ditches, treatment wetlands and storage ponds designed in order to support biodiversity. Where relevant, water reuse shall be considered in the context of the development of the integrated urban wastewater management plans referred to in Article 5.