Here are some quick and easy steps to get your freshwater tank and water lines ready for the new season. I clipped this from Les Doll's "RV Corner" web page. It's worth a visit.

De-Winterizing the Water System
 - By Les Doll, "The RVers' Corner"

      Spring is near for some fortunate people ...     

      If you live in the colder climes, where annual
winterizing with RV antifreeze is required, you must flush
the system thoroughly before use to get rid of the
antifreeze. While this antifreeze is non-toxic it tastes
really bad. Flush the water system by following the steps
below:

1. Fill your on board water tank 3/4 full and add one or two
capfuls (not cupfuls) of household bleach. Take the unit
around the block to slosh the mixture to all parts of the
tank.

2. Turn on the water pump and open all taps one by one to
allow this solution to fill every water line and flush out
the antifreeze. Once this is done, let it sit overnight.

3. Connect to your city water and flush every outlet for at
least 5 mins. Now switch the water heater bypass to allow
the water heater to fill. This procedure will prevent the
antifreeze from entering the hot water system. While this is
not a health problem, as such, the antifreeze will produce a
foaming condition that can persist for several days.

4. Drain your fresh water storage tank and refill with fresh
water. You can add a capful of bleach every time you fill
the water tank to keep it fresh and sanitary. However, due
to the unknown quality of campground water supplies, and the
fact that the water in your tank may stand for several days
or weeks in the hot sun, it is recommended that you use
bottled water for drinking supplies.

5. Now is a good time to check the operation of your dump
valves. The slide mechanism should operate smoothly with no
sticking and should seal completely. Change any suspect
valve before a problem develops. There are not many things
worse that encountering a stuck or broken sewage dump valve,
when the tanks are completely full.

http://www.rverscorner.com/ Visit the RV'ers Corner bulletin