I'd like to get some input from those that may live in a flood prone are or those with experience cleaning a water well. I have a bore well on my property in the city that I know needs to be cleaned out. The Rocket Scientists that do plumbing around here, routed the kitchen sink waste water into the old well since the house was put on city water. I can't use a trash pump because of the depth of the well. (suction deeper than 28 ft.) I had an idea of using a submersible sewage pump to lower onto the bottom an suck it out that way. I would have to put an new longer cord on the pump. It has a 2" outlet that I could screw PVC pipe into and suck the crap off the bottom and pump it out. Also, I saw a video story one time about how they used gypsum to weigh down contaminates in a pond and clear the water up. I thought I might be able to do that after cleaning it.