We are allowed to drain into sanitary sewer. I would like to be able to shoot out the side of the house in case of a sewer backup. I am unclear about valve placement. Is it a bad idea to put valves as I describe in the 1 1/2" discharge as seen in the photo with red lines? In case of sewer backup, the one valve would be closed and the other opened to allow flow to outside..... what is wrong with my installation and please suggest an alternative if you see one? [ATTACH]30210[/ATTACH]

Ok, here we go. I'm going to walk you through all we've done, up to this point. 57 foot "bored" well; submersible jet well pump; 70 gallon pressure tank and 40/60 pressure switch. We've been in our home (built in 1975) for four years. Up until a year ago, we never had well or water issues. All of our neighbors have the same type of well and do not have issues. Last spring we started to get a rust colored sediment in our water, so we called our local plumber who came to evaluate. He stated that the well pump was too low and was pulling sediment into the water system. He raised the water pump, away from the dirt and then suggested that we install sediment and iron filters and a water softner. We had all of that installed and everything was running great for about a month. Last May we started losing water pressure to the house. The water would be running perfectly and then the pressure tank gauge would drop to zero. So, we called another plumber out. He said that the well pump we had was not done properly, so we needed a new one. He installed a brand new well pump. We were able to run water as usual for about another week and then lost water pressure to the pressure tank all of a sudden, again. My husband figured out that the sediment filter was pretty dirty. Replacing it kept us in water for about two weeks. The last few months, we've been going through sediment filters about every two weeks up until September. In September we started losing water pressure again. There would be no warning. We'd be in the shower or washing dishes and the pressure tank gauge would just drop to zero. We had the same plumbing company come out and they said we needed to replace our water pressure tank, which was only a year old, at the time. At that point, I felt that they were just trying to get money out of us... replacing pieces as they went. So, I called an actual well company. That well company sent out a guy who spent 10 minutes looking down the well and measuring the water level. He stated that our well was "running dry" and then gave us an estimate for digging a new well. Well, not sure if y'all have priced a new well, but it'll cost a LOT more money than we have, so we've lived all winter on a prayer and have water with little problem. Our water pressure was so low all winter that we couldn't run the showers, but were able to flush the toilets and take baths. Then, at the beginning of March the water pressure gauge started to drop to zero again. We had a different plumbing company come out and he suggested we change the pressure switch. I did do that myself and we had pretty great water until two weeks ago. At the beginning of April the water pressure dropped so low that it was taking us 15 minutes to fill a bathtub. So, I called the same plumber who suggested the switch update. He bypassed the filtration system and we had awesome water pressure AND the water was clear, until the filter guy showed up. The filter guy performed a "backwash" and when he left, the water worked fine. Two hours later, the water pressure was super low again, so we bypassed the filtration system and had water the next day. Since then, we've been getting about one minute of decent water pressure and then it dies. I check the water pressure gauge (which was replaced with the switch, so it's new) shows zero. AGAIN! I would like to know what we should check next? Could the pressure tank be full of sediment? Would it benefit us to replace that before we start worrying about paying for a new well? I grew up in a rural area and was taught that wells never go dry, that there's usually just a problem with the delivery system, which is why I'm cynical of the well company spending ten minutes and handing me an estimate. :help: Thank you all in advance.