On Mon, 24 Aug 2015 23:16:42 -0400, Wayne.B
wrote:

On Mon, 24 Aug 2015 22:41:30 -0400, wrote:

On Mon, 24 Aug 2015 21:35:52 -0400, Wayne.B
wrote:

On Mon, 24 Aug 2015 20:58:25 -0400, wrote:

We ended up going through Fresno and over on Tioga Pass where they
have to lock up the water.

http://gfretwell.com/ftp/california/...he%20Water.jpg

===

That's a common sight if you go boating in the Bahamas or Caribbean.
At 50 cents a gallon in some locations it can cost us over $100 to
fill up. That's still a lot cheaper than making your own however.

I assume you have an RO, how much does it cost to make water.

===

We have tankage for 500 gallons so have never felt the need for a
water maker (RO). They cost upwards of $5 to $7K to buy and install,
take up valuable engine room space, and require a lot of
TLC/maintenance. In addition you need to run the generator which has
a fully loaded cost of $8 to $10 per hour. Assuming a 20 gph water
maker, you're looking at a fully loaded cost in the 70 to 90 cents per
gallon range depending on how you depreciate/amortize the purchase
price.

I was never sure why it should cost that much. I guess running RO from
sea water is tougher than brackish well water.
Basically you just need a high pressure pump and a membrane/vessel for
that along with intake and polishing filters.
Since you are not really pumping that much water, I suppose it could
run off the house battery.
I built one that would make drinking water out of river water and it
ran off of 12vdc. I never actually had to use it and the parts are out
in the shed. It would fill the bladder tank in a few hours tho.
You are not taking showers but it would provide drinking water for a
couple people.
It was a 65 PSI rated chemical pump and the "under sink" R/O setup.
I had a small bladder tank on the input and a bigger one on the
out\put with a precharge of about 20PSI.