wa8yxm wrote:
Looks like the seal between valve and pipe,, This is an easily replaced (IF the bolts are not rusted) gasket,, id' do it in the spring when you drain the pink.
Might just be a loose bolt,, check in spring once melted.
Thank you both for the replies, will do.
I don't believe the bolts are rusted and I plan to check in the spring. Blue water from both tanks at separate times would signal that this is coming from where the valve meets the pipe. I've only had the original camper for 3 years, and will check the seal and the tightness of the bolts in the spring. Can't wait.