Just got to the campground last night after driving 10 hours. Got here late at night, set up the camper but just barely. Too exhausted to do anything more than plug in electricity and hook up the hose for water (full service here) and go to bed. Made sure water came out of the faucet first. Got up a few hours later and bathroom floor had more than an inch of water. Cleaned up the water, went outside and turned off the water. Didn’t drain water out of faucet. Couple hours later, more water on bathroom floor. Drained the faucet, opened up the floor plug in bathroom and now (few hours later, the bathroom floor is dry. 2006 Fleeteood Niagara bought used last year. Newbie. No idea what’s wrong. Can someone suggest what my problem is? Oh, and gray water seems to be draining ok. Thanks.