In my last home there was a sump pump in my crawl space to remove excess storm water. It was a real piece of work — the wrong type of pipe was used to install it, the backflow prevention device didn’t work, several supports were missing causing the pipe to sag in places, and somebody had wrapped a broken 90 degree fitting with electric tape to try and stop a leak. The pump still worked, although inefficiently. I was an apprentice plumber at the time, and these glaring issues irked me to no end. When it came time to sell the house, I finally got to fix it. I tore it all out — every bit of pipe and support — and installed a new system with the correct pipe and fittings.