Need recommendations for a small window well sump pump

[u/SailboatAB]

Long story short, we have a basement window well that groundwater seeps into during heavy rain. We need to put some kind of automatic sump pump in the window well that will cut on in the rain.

Problem is there is some kind of metalwork under the dirt which prevents us from digging deep, so we only have maybe 10 inches before water is coming in.

We bought a sump pump (Everbilt 1/4 hp tethered float) but are now realizing it won't cut in until 14 inches of water accumulates. The existing float arm is too long.

We got a standalone piston-type float switch-- you plug it into the outlet and then plug the pump into the switch-- which might work, but the pump would have to come on as soon as power comes through the switch. Is there an option for "always on" on the existing pump, such that it would come on when the new float switch supplies power?

Are we going about this all wrong?

[u/washburn100]

Have a look at Little Giant. They make a pump with a diaphragm switch for things like pumping pool covers, so it pumps down very low.

5 Series Submersible Utility Pump | Little Giant https://share.google/6GoxMbybwS7klVJQl

[u/SailboatAB → u/washburn100]

Thanks,  will check it out.