We have lived here 3 1/2 years and never had the septic pumped (new house, new septic). There is a place in the backyard that stands in water. Around 20 feet long. It is really bad right now and man, it stinks. So we took the lid off and its to the top. Is it time to have it pumped? The grass has always been greener and really thick on the wet spot. Always. What is the problem? If this is just the way it is supposed to be, can I put rocks on it? Like a rock garden? Something so the kids won't run through it. I know nothing can be planted on it but I got to do something. It bogs down the mower. Thanks.