Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-07-2016, 07:29   #61
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,839
Images: 25
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by Kenomac View Post
Honestly, some of the comments on this thread regarding the fear of city tap water border on Excessive Compulsive Disorder. How do any of you actually enjoy eating out at a restauant or consuming prepared products from a grocery store?

Weird paranoia if you ask me. We grew up drinking from the garden hose, and still do. Just filled up 200 gallons today with the hose from a tap at the marina.

So far... Nobody's died
.

How do you know? You might be a ghost!




.
__________________

__________________
Notes on a Circumnavigation.
OurLifeAtSea.com

Somalia Pirates and our Convoy
MarkJ is offline   Reply With Quote
Old 23-07-2016, 08:13   #62
Registered User
 
zboss's Avatar

Join Date: Sep 2011
Location: On a boat
Boat: Cabo Rico 38
Posts: 3,268
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Our cats are sensitive to the taste of our tank water. I think animals tend to be much more sensitive to water quality sometimes.

We carry 150 gallons and it sometimes sits around for a while before being consumed. We recently installed a knock off seagull unit and, although not RO, the cats will drink that water. We also think it dramatically improved the flavor of the water, even though we make a big effort to keep the tanks clean.

The advantage over the RO units is size and consumable size. We only need to carry one small replacement filter and it is supposed to last a year. Compare that to the 3 months RO filters last and that you have to carry 3 each at a time. That means carrying 9 filters for a year of water.


Follow us on tikitreksailing.com
__________________

__________________
zboss is offline   Reply With Quote
Old 24-07-2016, 01:03   #63
Registered User
 
nigelmercier's Avatar

Join Date: Jul 2011
Boat: Bavaria 47
Posts: 172
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by barnakiel View Post
BTW the other liquid, the one you are sipping on your avatar ... an even better solution than bottled water! ;-)
Not for me, haven't touched a drop of booze in 8 years

I accept your point about bottled water, in the Canary Islands it is the norm. I'm currently in recovery from pneumonia, possibly caused by Legionella bacteria, so I sympathise with the need to have clean water.
__________________
Nigel
Got a Bavaria? Want a Bavaria Forum? Click here!
nigelmercier is offline   Reply With Quote
Old 24-07-2016, 02:21   #64
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 18,309
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by sailorboy1 View Post
I see no problem with doing it if your system can supply the inlet requirements and unlike others see no reason for you to feel foolish by thinking about it or doing it. I would bet the reject going back to the tank isn't a problem due to the low percentage, but the volume is low probably just as well to dump it.
I agree. I don't understand why so many people think this is stupid. On a boat much more than at home getting really clean drinking water is a significant challenge. Tank water, even if you start with reasonably clean water, is subject to contamination from hoses, leaking o rings, and God knows what else. Humping bottled water is really not practical if you cruise at all away from civilization, and besides that it's not really clear that bottled water is very often that much better.

I use the expensive Seagull filter, which is not RO, but removes most of the carp, including bacteria.

I guess RO would be even better and probably cheaper. I wouldn't put the reject water back into the tank, but I bet it wouldn't be hard to arrange a way to capture it to use for washing etc.

I think it's a good idea. Not without challenges, but I guess these are not hard to overcome.
__________________
Dockhead is offline   Reply With Quote
Old 24-07-2016, 02:29   #65
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 18,309
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by nigelmercier View Post
Why not just buy bottled water? This has the advantage that you can keep it in the refrigerator.
That's what we used to do when chartering. But there are four five good reasons against it:

1. Bottled water is often no better than tap water anyway. There's no guarantee that it's really any good. This is especially the case in developing countries where the tap water is poor.

2. Humping bottled water to the boat is a royal PITA even in the best of circumstances. On a long cruise where groceries often get carried by hand and then by dinghy, it's just, for me anyway, totally unacceptable.

3. Cost.

4. Storage.

[EDIT: 5. Trash, of the type you can't throw overboard when out to sea, which is a real problem on long passages.]
__________________
Dockhead is offline   Reply With Quote
Old 24-07-2016, 15:48   #66
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 15,486
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Other than having an aversion for paying more for water per gallon than I do for fuel, I don't use bottled water due to all the plastic.
More and more I am getting tired of plastic.
Yes my boat is plastic and there are many important uses of plastic, but I believe there is just too much of it, and I will do what I can to not add to the amount there is.


Sent from my iPad Pro using Cruisers Sailing Forum
__________________
a64pilot is online now   Reply With Quote
Old 24-07-2016, 16:10   #67
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon
Boat: Seafarer36c
Posts: 3,971
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

[QUOTE=a64pilot;2173718]l, I don't use bottled water due to all the plastic.
More and more I am getting tired of plastic.

Well there is a new plan afoot to capture the pacific gyre that looks reasonable
(floating booms.) So maybe as we cruise around and see all that junk floating around, we can imagine a better world someday.
No one would be so tacky as to put a message in a plastic bottle would they?
__________________
Guy is online now   Reply With Quote
Old 26-07-2016, 00:15   #68
Registered User

Join Date: Jun 2010
Location: Mediterranean
Boat: Beneteau Oceanis 50
Posts: 277
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by botanybay View Post
This is to create bottled water quality drinking water from the boat freshwater tank on a separate tap in the galley.

I know these units reject the excess water in homes down the drain, however it is still fresh water and probably just fine for normal use, I could return the reject to the 300 gallon tank or return it to a separate tank if necessary.

Any thoughts on this.

Remember, I am NOT trying to make fresh water from Salt, just clean up freshwater tank water for drinking.

Sent from my SM-G935V using Cruisers Sailing Forum mobile app
IF you think the water needs some filtering just put a domestic charcoal filter in the water line before your tap.
__________________
how long has this been going on and why wasn't I told about it earlier.....
lordgeoff is offline   Reply With Quote
Old 26-07-2016, 02:29   #69
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 18,309
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by lordgeoff View Post
IF you think the water needs some filtering just put a domestic charcoal filter in the water line before your tap.
A charcoal filter improves the taste and gets rid of chlorine, but doesn't get rid of microbes.

The Seagull filter (which is what I use) deals with practically all microbes, including viruses, bacteria and cysts:

https://generalecology.com/info/techmemocert


It is not reverse osmosis so does not waste water like RO does.


An RO filter is even better at filtration, doing that down to the molecular level AFAIU, but wastes water. It's also cheaper than Seagull.

I use RO on land.

I think the OP's idea is reasonable. He should also look at the Seagull filters, which are a more typical solution for a boat.
__________________
Dockhead is offline   Reply With Quote
Old 26-07-2016, 09:19   #70
Registered User

Join Date: Jun 2010
Location: Mediterranean
Boat: Beneteau Oceanis 50
Posts: 277
Re: Anyone used an under sink reverse osmosis unit to purify water FROM FRESHWATER ta

Quote:
Originally Posted by Dockhead View Post
A charcoal filter improves the taste and gets rid of chlorine, but doesn't get rid of microbes.

The Seagull filter (which is what I use) deals with practically all microbes, including viruses, bacteria and cysts:

https://generalecology.com/info/techmemocert


It is not reverse osmosis so does not waste water like RO does.


An RO filter is even better at filtration, doing that down to the molecular level AFAIU, but wastes water. It's also cheaper than Seagull.

I use RO on land.

I think the OP's idea is reasonable. He should also look at the Seagull filters, which are a more typical solution for a boat.
Preseason when my water maker is pickled we usually use marina water. I test if it looks smells or tastes suspect and if it is particularly bad we buy bottled water. 500ppm-750ppm to me is fine. Once cruising starts we make our drinking water and use it for tea coffee etc We keep the Desal water separate in 25lr containers and decanter into 5 Lt containers as necessary. As I said before...IF you are concerned then a simple charcoal filter will work. Remember the dock/Marina is most likely chlorinated to meet health standards. We don't bother. Most times in our travels marina or dock water is fine. Read the Seagull link. What sort of filter is used?
__________________

__________________
lordgeoff is offline   Reply With Quote
Reply

Tags
osmosis, reverse osmosis, water

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lipari 41: 41 with Osmosis treatment vs. one that has not shown osmosis Te81611 Fountaine Pajot 16 10-11-2015 08:16
Lipari undergoing osmosis treatment vs. One that is not supposedly having osmosis Te81611 Multihull Sailboats 17 02-11-2015 03:26
Reverse Osmosis Equipment - Sea Water to Fresh Water markmark Provisioning: Food & Drink 16 24-01-2015 15:32
Home under-sink reverse osmosis on boat? dstrout Plumbing Systems and Fixtures 5 29-04-2014 13:25


Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 11:29.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.