59 - Waste water treatment (up to 3 points)

(a)


If car washing facilities are offered within the tourist accommodation, car washing shall be allowed only in areas which are specially equipped to collect the water and detergents used and channel them to the sewerage system (1 point).

(b)


Where it is not possible to send waste water for centralised treatment, on-site waste water treatment shall include pretreatment (sieve/bar-rack, equalisation and sedimentation) followed by biological treatment with > 95 % BOD (biochemical oxygen demand) removal, > 90 % nitrification and (off-site) anaerobic digestion of excess sludge (2 points).