Water Powered Backup Sump Pump

At a previous house I had a sump pump that would run quite a bit during rainy weather, so when the power went out I was left with a basement mess.  I ended up installing a backup pump that included a large battery, which worked but was yet another device to maintain.  So when I found out they have backup sump pumps that use the regular home water supply for its power, I was amazed, even if I don't have water problems any more.

https://www.amazon.com/Basepump-Water-Powered-Backup-Sump/dp/B000GBUU7G