Use your username and password to login to mse forum. Serious flooding can be caused by fly-tipping in or around streams and culverts. Including toilets, baths, showers, sinks, taps, burst pipework etc. We have the technology to survey drains for both private (from 100mm in diameter) and commercial (up to 1 metre in diameter) drains. Through a competitive tender process 40seven were awarded the surveying contract to provide topographical,.