haha, i just recalled a story. it was christmas eve 2017, wastewater flooded our basement, it was like a meter (~2 feet) deep. we were in the middle of a family dinner, so we called a guy who had some fancy waterproof trousers, asked me for an electric pump i had lying around, dropped the pump in the wastewater, let the pump do the trick, and half an hour later, he asked for 50k local money (~200 usd). not bad for standing in shit in a pair of waterproof rubber trousers for half an hour. fucker also denied to issue an invoice at first request.
anyway, good luck for the job, i hope you get it when you have the required qualification.