worker lowers equipment into a manhole to inspect or repair the underground sewage system

sewage equipment system underground manhole inspect worker repair maintenance utility sanitation infrastructure plumbing drainage inspection sewer labor safety construction public utilities protective gear repairwork workersafety urban sanitationsystem repairman excavation manholecover sewersystem undergroundwork utilitymaintenance infrastructurerepair drainagesystem protectiveclothing manuallabor publicworks safetygear inspectionprocess ai generated