Sewage disposal – through the 5,520 km of sewer system 210 million m<sup>3</sup>  of sewage and rainwater is discharged annually. Waste water treatment – since 2011 nutrients have also been removed from the treated water emitted into the Danube. Biogas production – nearly 40 thousand m<sup>3</sup> of biogas is produced daily from sewage and wastes transported from outside. Operation of public toilets – well-maintained and clean public toilets in Budapest. Flood protection – successful defence against the 891 cm record water line of the Danube in 2013.
Sewage disposal – through the 5,520 km of sewer system 210 million m3 of sewage and rainwater is discharged annually.
Waste water treatment – since 2011 nutrients have also been removed from the treated water emitted into the Danube.
Biogas production – nearly 40 thousand m3 of biogas is produced daily from sewage and wastes transported from outside.
Operation of public toilets – well-maintained and clean public toilets in Budapest.
Flood protection – successful defence against the 891 cm record water line of the Danube in 2013.