I'd flush the entire water system and see if that helps, bypassing the HWH. Open all the faucets and grey tank and let it run. If it runs clear, the cloudiness is most likely coming from the HWH. I'd flush that after. But from my experience, air could be the culprit. It will cloud water. An easy way to tell if it's air is, put some water in a clear glass. If it clears after a bit of sitting, it's most likely air.
2013 Jayco Eagle 328 RLTS
2013 Ford F350 6.7L 4x4 CCLB W/Air Lift air bags
2002 Coleman Bayside Elite (traded)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)