Other, smaller municipal discharges originate at Pravdinsk (in the Russian part), Bartoszyce (3,400 m3/d), Lidzbark Warminsld (2,720 m3/d), Dobrc Miasto (1,500 m3/d), Stawigud (750 m3/d), Sepopol (150 m3/d),Tolek (130 m3/d), and, in the Russian part, at Znamensk. The discharge of municipal sewage to the Prcgel in the Russian part of the basin mainly originates from Gvardeysk, Tshernjahovsk and Kaliningrad cities. There are discharges to the tributaries from the Ozersk (to the Wegorapa) and the Gusev (the Pissa).