the sewage treatment plant in slavyansk-on kuban. water for sewage treatment in a small city. bright on the banks of water

architecture banks bright building canal cane city cleaning concrete cre crime dam danger day dirt dirty ditch drain drinking drone duck duckweed environment flood flowing forbidden green groundwater hydro infrastructure kuban lake landscape lock nature outdoors overflowing park photography plant quadrocopter rain reed reservoir river sedimentation sewage sewer slavyansk slavyanskkuban small treatment unhygienic waste water