About 330,000lbs of natural Wax, for the production of candles, had to be removed from about 30 sewer and storm lines, ranging from 12″ – 28″, manholes and lateral connections after a factory fire melted the wax that floated on firefighting water into streets and sewer system where it settled.

The material was not as hard as concrete, but it was still too complicated for conventional jetting trucks to take care off and replacing the lines would simply take months. Precision water jet cutting robots where used to precisely remove the settled Wax in no time.