Todd,

I never really considered building in a water tank.  

I use a system similar to what Graham has described.  In my case I use a total of 10 1.25 gallon water jugs.  Eight of these are stored under the v-berth, and 2 against the head partition under the sink.  Having 2 jugs under the sink means that when one runs dry, I can just switch the pump intake tube the other jug and keep going.  I use a self-priming foot pump which doesn’t mind running dry.

I got the jugs from U. S. Plastic Corp (https://www.usplastic.com; item #73061).  I chose the model based on how well it would utilize the space available under the v-berth.  

When cruising, I use about 1 jug a day, so the 10 jugs is plenty for a week-long cruise.

 Peter Nyberg
Coventry, CT
s/v Silverheels (1988/2016)

> On Nov 5, 2019, at 7:09 AM, Todd Tavares <tavares0947 at gmail.com> wrote:
> 
> Has anyone built, or considered building a permanent integral water tank?
> (Peter?)
> I have been watching several YouTube videos by atomvoyager and he always
> builds integral tanks and coats the inside of the tank with food grade
> epoxy. It may be a worthy project as my R 22 does not have a water tank at
> all. But the epoxy is quite expensive.
> 
> https://youtu.be/bUiV90sPMbU
> 
> http://www.sscoatings.net/brewcoat.htm
> 
> Todd T.
> 
> 
> tavares0947 at gmail.com
>