hard water buildup

Since we moved house we've had to replace our kettle about every 12 months. The amount of limescale that builds up on the element is incredible. I've never seen anything like it. The speed it builds up in the bottom of the kettle you just wouldn't believe. I know it's caused by hard water...

Cleaned out long horizontal run PVC drain pipe from kitchen heavily clogged with calcium. Used vinegar to soften and then cut pipe and jetted from low end. Now have calcium clog after vertical stack in 4" pipe under slab. Location approx 10' after vertical based on basement bathroom fixture...

Hello! My old shower has become increasingly HOT. All other faucets are fine. I'm having trouble figuring out exactly how I can control the temperature here on this old handle / cartridge style. I don't recognize any way to do it without removing some screws and going deeper. Any thoughts...