Ключевые слова: blocked, cleaning, clogged, clogged plumbing, day, dirty, drain, drain unclogging, drainage, draining, environment, equipment, hold, holding, hole, industry, job, line, maintenance, manhole, men, open, pipe, problem, pump, pumping, repair, sanitation, septic, service, sewage, sewage pump, sewer, sewer truck, sewerage, site, special, street, suck, tank, tube, unclog, unclogging, urban, utility, waste, water, work, worker, working,