Article 21 1.

discharges from urban wastewater treatment plants in order to verify compliance with the requirements of Part B of Annex I in accordance with the methods for monitoring and evaluation of results laid down in Part C of Annex I; that monitoring shall include loads and concentrations of the parameters listed in Part B of Annex I;

the amounts, composition and destination of sludge, taking into account the requirements of Directive 86/278/EEC for sludge intended to be used in agriculture;

the quantities per year and per month of urban wastewater reused for agricultural irrigation that is subject to a derogation referred to in Article 15(1); the nutrient content of the fraction of reused urban wastewater for agricultural irrigation and the period during which that fraction is reused compared to the monthly water and nutrient demand of the crops targeted by that reused urban wastewater;

the GHGs, including at least CO2, N2O, CH4, emitted from urban wastewater treatment plants of 10 000  p.e. and above by means of analysis, calculations or modelling where appropriate;

the energy used and produced by the owners of urban wastewater treatment plants treating a load of 10 000 p.e. and above, or by the operators of such plants, regardless of whether it is used or generated on-site or off-site, in line with the requirements referred to in Article 11(2), as well as the energy purchased under the derogations referred to in Article 11(3) and (4).