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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Drinking water tank water.
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Thread: Drinking water tank water. Reply to Thread
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Topic Review (Newest First)
06-18-2013 07:56 PM
mark2gmtrans
Re: Drinking water tank water.

Quote:
Originally Posted by MikeOReilly View Post
We go through this process every season. I find it takes about three our four good flushes of the system to clear the anti-freeze taste out. Our water tank is SS.

We also have an activated carbon inline filter. It helps remove some of the anti-freeze taste (we did a test last year), but flushing eventually clears the taste.
Try draining the tank, then fill the tank and add about 1 cup of chlorine bleach, the unscented kind, for every 40 gallons of capacity, then flush the system completely. Then take 1 dry cup of baking soda for every 40 gallons, dissolve the baking soda in hot water and add it before you fill it and flush it again. That should take out all the odors, smells, tastes, gunk and so forth, it works in stainless steel, aluminum, or any other type of tank. If it is really foul and smelly you can run the chlorine through it twice, and the second time you let it stand 24 hours.

Chlorine is a highly unstable molecule and breaks down very quickly into inert compounds, does not stay in the system long enough to do any damage at all, and will kill every type of virus, bacteria, or micro organisms in the tank. Trust me, if you have something in the tank that bleach won't kill you have bigger problems than some odors. The baking soda will remove the chlorine smell and bad taste, and if you think you need more than one cup in the one gallon of hot water, just make sure you dissolve it and put a bit more.

Mark
06-18-2013 03:48 PM
kellysails
Re: Drinking water tank water.

Here is a good article about purifying water. I think people use too much bleach. As depicted in the article you really don't need to use much at all.

How to Purify Water amount of bleach per gallon
06-18-2013 09:11 AM
Minnewaska
Re: Drinking water tank water.

We wash, brush teeth, bathe and cook with tank water, but drink bottled. We keep around 10 one gallon jugs aboard at all times, then fill individual water bottles for drinking. Cuts down on some of the plastic anyway.

We never ever put anti-freeze in the tank, but blow out the water for the winter. All water is filled with a carbon filter attached to the hose and we occasionally add a sodium chlorine based water treatment. I shy away from doing it at each fill, as chlorine will corrode all fittings and fixtures that it remains in contact with over time. I do not think the low dosage of these treatments actually kills all bacteria, but it might. High dosing the water to the point that you can smell the chlorine would be very bad for your health. On the other hand, a carbon filter will quite easily remove the excess chlorine at the tap, if you want to go to the effort.
06-18-2013 08:42 AM
ThirdCoastSailor
Re: Drinking water tank water.

My wife and I use our tank water regularly for both cooking and drinking and have had no health issues. We do shock the tanks with bleach annually. Using bottled water while cruising doesn't sound practical.
06-18-2013 08:22 AM
JonEisberg
Re: Drinking water tank water.

Yeah, Seagull is a nice product - don't have one myself, but I've run a few boats so equipped, the owners have endorsed them wholeheartedly...

This portable alternative for traveling looks interesting... PRACTICAL SAILOR gives it a very favorable review in their latest issue:

CamelBak | All Clear Purifies Water Fast


06-17-2013 06:19 PM
kellysails
Re: Drinking water tank water.

We were sooo done with bottled water from all the various charter trips we had that when we got our boat we put big bucks into a Seagull purifier. To this day we think this was the best ever product we bought for the boat. Not cheap, but we cherish this THE most among all our other do-dads. This system simply has an additional faucet off of our sink.

Seagull IV X-1F Purifier with Faucet - Water Purifiers and Water Micro Filters - General Ecology
06-17-2013 04:06 PM
MikeOReilly
Re: Drinking water tank water.

Quote:
Originally Posted by patrscoe View Post
Will the water filtration / purification remove the odor from marine anti-freeze due to winterization?
Two years ago, we purchased our sailboat late in the year and could not sail her out until the early spring. So we had the local small marina winterize our systems but apparently he dumped several gallons of marine anti-freeze into the holding tank instead of draining the tank and filling the lines. I have drain our tank, over and over, flushed the system out but still can't get that odor out of the water.
We go through this process every season. I find it takes about three our four good flushes of the system to clear the anti-freeze taste out. Our water tank is SS.

We also have an activated carbon inline filter. It helps remove some of the anti-freeze taste (we did a test last year), but flushing eventually clears the taste.
06-17-2013 04:03 PM
travlineasy
Re: Drinking water tank water.

If the marine antifreeze you're talking about is the pink stuff, I never knew it had an odor. I'll have to take a sniff the next time I go to the boat.

Gary
06-17-2013 03:48 PM
patrscoe
Re: Drinking water tank water.

Will the water filtration / purification remove the odor from marine anti-freeze due to winterization?
Two years ago, we purchased our sailboat late in the year and could not sail her out until the early spring. So we had the local small marina winterize our systems but apparently he dumped several gallons of marine anti-freeze into the holding tank instead of draining the tank and filling the lines. I have drain our tank, over and over, flushed the system out but still can't get that odor out of the water.
06-17-2013 03:02 PM
Capt Len
Re: Drinking water tank water.

BPA is not a big problem if you don't count things like your tender enlarged breasts and early menses onset in your pre teen daughter.
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