Why do I have rusty water in my kitchen sink?

Why does my tub faucet run when the shower is running?

What is that black ring at the base of my toilet?

I hear a rumbling sound coming from my water heater. What’s happening?

The icemaker on my refrigerator does not make ice. What causes this?

Why does water seep into the bottom of my dishwasher, even if I don’t use it?