laying underground storm sewers at a construction site. groundwater system. installation of water main, sanitary sewer, storm drai

assembling conduit construction culverts damage digging dirty ditch drai drainage drinking earth engineering excavation filtration foundation ground groundwater grunge hole industrial infrastructure installation installing job laying main mesh municipal network pipe pipeline pit plumbing problems pumping reconstruction repair replacement sanitary section sewage sewer sewerage sewers site storm system trench underground utility water work