Sewer district reverses storm water problems Storm water no longer a concern for sewer system with local man's invention Check out this story on thenewsstar.com: http://tnsne.ws/1tLHywT Jabar Corp.'s owner David Putnam has designed and patented a small device that will make a huge difference in stopping the inflow of surface water through manhole covers for sewer districts. It's a simple rubber invention that clamps onto a manhole through a drilled hole that's secured with engineering glue.