I had a similar thing happen at my house. I have a water softener. Its the kind that doesn't use electric. It uses the water pressure to move the insides. Either way, it stopped working. When I turn the lever to the off position, it lifts the water pipe ground from my house. Since turning it off, I have lost 6 WAPS, three routers, one security cam, and two blurays. Whenever the electric goes off and comes back on, it would blow out several things.

After doing a bit of research I found that this was common with the Kinetico Softeners. My problem is that my panel grounds to my water pipe, but not right where it comes in. It grounds at the closest pipe to the panel. It should be right where it comes into the house. If it was, then when the softner is off, it would still ground through the water pipe. I ended up running a piece of pipe with a shutoff between the two pipes for continuity :)

I wonder how many people have their house grounded improperly and have a Kinetico water softener.