If I filled the tank in Mexico, I would sanitize it and the water I filled  with chlorine bleach, or with iodine tablets if I could not get bleach (iodine has a nastier taste than does chlorine).  filling with tap water in the U.S., I consider it fine.  BTW, if I filled it in Mexico, and sanitized it, I would drink the water.  I do not drink tap water in Mexico under ordinary circumstances, but with an opportunity to sanitize, fine.

---- Frank Condelli <RAlanen@AOL.COM> wrote:
> In a message dated 21/05/2010 12:05:58 A.M. Eastern Daylight Time,
> LISTSERV@GERRY.VANAGON.COM writes:
>
>         I consider it  necessary.  I do just as you have suggested but do
> drive around a bit for  the slosh effect.  rinse drain twice.  While in
> Mexico or on the road  for extended periods I put in two sanitizing tablets each
> time I fill the  tank.  Never had any problems so far.  BUT, only use the
> water  for coffee or washing.  Drink only bottled water, Tequila or  Cerveza.
>
>
>
> >>>>Is it necessary to Sanitize the tank when I refill  it in the spring?
> I know
> the standard procedure is to fill with water  and ounce of bleach, let it
> sit
> for a couple hours, drain it and refill  with fresh "city water" as it
> contains a safe level of  chlorine.
>
>
>
> So, what do most of you  do?<<<<<<
>
>
>
>
>
> Cheers,
>
> Frank  Condelli
> Almonte, Ontario, Canada
> '87 Westy & Lionel Trains (_Collection for sale_
> (http://frankcondelli.com/trainsal.htm) )
> _Frank Condelli &  Associates_ (http://frankcondelli.com/busindex.html)  -
> Vanagon/Vanagon Westfalia Service in the Ottawa Valley
> _Vanagon Stainless Steel Exhaust  Systems_
> (http://frankcondelli.com/exhaust.htm)
> _BusFusion_ (http://www.busfusion.com/)  a VW Camper  camping event,
> Almonte, ON, June 10 ~ 13,  2010

--
David McNeely