Ключевые слова: bacteria, biological, canalization, combined, connected pipes, connection, decay, diameter 160mm, dirty, ditch, drain, drainage, ecological septic tank, effluent, equipment, excavation, ground, groundwater, hole, home sewage treatment plant, industrial, industry, inserted, installation, linked, material, outdoors, piercing, pipe, pipeline, pipes, pit, plastic, plumbing, pollution, reservoir, safety, septic tank, server, sewage, sewage well, sewerage, single chamber, soil, system, trench, wastewater, water, waterproofing,