After a fair amount of regrading etc., we've manage to get things to the point that, when it rains an inch or so, the sump pit in our basement only has to empty once every 10-15 minutes, rather than every 1-2 minutes like it did when we bought our house.
As much of an improvement as that it, it still means we're screwed if the pump fails on us (which it is has done twice in four years) or if the power is lost for an extended period of time. Until we figure out how to make flooding a virtual impossibility (barring major acts of God), we're reluctant to even finish out our otherwise nicely spacious basement, let alone follow up with extended trips out of town.
Any suggestions on what kind of a backup system to install? I'm aware that there are battery-powered backup pumps, but my impression is they're pretty expensive for any kind of reasonable capacity.
I'm aware that there are simple nozzle devices (eductors) that can use water pressure from a garden hose to suck water out of low-lying areas. I'm wondering if there are adaptations of this idea that could serve as a backup to the sump pump when there's no electricity.
Also, I should mention that there are *two* conventional sump pits/pumps in our basement, but for reasons that are beyond my ken, the drain tiles served by each are unconnected (the ends are separated by about 6'; I know this, because they were installed after the house was built, and you can see where the concrete was chopped up).
Thus, a failed pump on one end of the basement means flooding, even if the pump on the other end *could* have taken up the slack. Again, it's happened to us twice.
Is this just stupid, or is there a good reason (beyond saving the cost of chopping an extra 6' of channel in the basement floor) that I'm just not seeing?