that's what we use on aircraft potable water system bleach Pur-geen brand
bleach.  we pour in about 2 gallons for 100 gallon tank...  let it sit a
day or two then flush the system out good and refill.  bleack kills micro
organism's etc.

Mike
At 07:00 AM 12/29/2002 -0800, Jason Weisberger wrote:
>Fred,
>
>Bleach seems to not be in keeping with "potable" - are you suggesting not
>use the internal water tank for drinking/cooking water on camping trips?
>
>jlw
>
>On Sun, 29 Dec 2002, Fredrich Hesterberg wrote:
>
> > Mr. Jason,
> > A cup of bleach--fill halfway with water, drive to shake it around,
> > drain it out.
> > This works good.
> > Then from thispoint on put 1 oz. of bleach into water to keep fresh.
> > Good Morning,
> >
> > Fred
> >
> >
> > E-mail message
> >
> > Sender: vanagon@gerry.vanagon.com (Vanagon Mailing List) From:
> > jweis@WHY.BOTHER.COM (Jason Weisberger) Date: Sun, Dec 29, 2002,
> > 6:18am (CST-2) To: vanagon@GERRY.VANAGON.COM Subject: Cleaning the water
> > tank!?
> > Hi,
> > What is the suggested method for cleaning out the water tank for potable
> > water in an 87 Westy GL?
> > thanks
> > jlw
> >