I have foundation drains around the entire perimeter of my house. It's clear that at some point about 6-8" of concrete was removed from the slab all the way around and then filled in. I also have two sumps, both in the rear corners of the house, each with it's own pump. Are these two sumps likely connected or does each side of the house drain to it's respective pump? I ask because the float valve on one of the pumps has failed. I happened to notice because it's near where I bring my wood into the basement-the water level was near the top, way above the level that would normally trip the switch. I unplugged the combination plug (the switch plugs into the wall and then the pump plugs into the switch) and plugged the pump in directly, it worked just fine, but of course, manually operating it is a pain. The pumps are of unknown age (I bought the house five years ago), so I was thinking of replacing them anyway, I just am wondering if, in the meantime, the other pump can take up the slack if I forget to empty the bad sump. The complicating factor for both of them is that when we bought the house, radon was found, so we had the sellers install a radon fan which also involved sealing all openings in the slab, including the sumps. They used sheets of lexan that they siliconed in place so I can see inside them but actual access is difficult. Anyway, are these drains likely connected? If so that will give me some peace of mind until I can replace the pumps.