Yup, water came out of faucet looking black and smelling horrible. Turns out that I had let it set with hot water tank full in the sun for a month or two, and the water turned septic. Drained all water. Filled to flush. Drain again. Fill with Clorox solution until have chlorine smell in all faucets. Let set all day. Drain and flush water that night. All seemed fine in the morning. Lesson learned, when it's going to set for a while, either go out once a week and drain a bunch of water from all faucets to replace with fresh, or open low point drains, and the drain valve for the hot water heater.
2003 Rexhall Rexair, 3550 Ford V10 with Banks
2014 Honda CRV-AWD via Blue Ox
Travel with SWMBO and Golden Doodle co pilot