water tanks leaching plastic taste - SailNet Community

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Old 09-16-2010
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water tanks leaching plastic taste

The water that comes out of the tanks in my 1986 crealock 37 tastes like a toxic plastic elixir. After a couple months of this, my mate and I found that we were simply drinking more mexican beer to compensate for our aversion to the plastic tank water. This does not really help in our desire to stay hydrated. I have not owned the boat for long and it is presently in mexico while I live in northern california so I dont have easy access to examine the tanks. Can someone outline for me what I will find when I am able to open up the plywood covers under either the V-berth or the quarter berth? I am actually wondering if there could be osmotic blisters inside of the water tanks! It tastes that bad. Has anyone retrofitted stainless tanks into that space. Wondering about putting some sort of water bladder in there. A filter on the output is not really an option unless it could actually remove the plastic molecules because we are not really into ingesting plastic for long periods of time. I apreciate any input.

Grant
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Old 09-17-2010
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What is the material composition of your water tanks???? Can give you a definitive answer if you reply with the above info. ;-)
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Old 09-17-2010
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My understanding is that the tanks are part of the hull liner. I know that my hull is fiberglass. I do not know what the hull liner is or what material it is comprised of, and I have not looked inside the tanks because removal and reinstall of the tank lids is a job that I have not made time for. I am hopping that someone with a similar year crealock 37 has explored their water tanks and can give me a heads up on what to expect in there. The boat is 2000 miles away and when I head down there for the winter, I want to bring with me whatever I need to correct the water tank situation. Many thanks.

Grant
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Old 09-17-2010
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PSC water tanks are built into the liner and are gelcoated. That may be leeching, could be old plumbing too??? i have an Orion, not a 37 but the water tanks are similar.

When you get in there you'll find some plastic thru hulls penetrating the tank (one vent, one bigger fill, and a supply to the water system). Not much else in there.

the water tank under the quartberth may have a support that is molded into the tank somewhere in the middle so when you lay on the quarter berth it doesn't stress the tank lid (mine does).

I installed watertight clear screw down deck plates in my tank lids for easy inspection and cleaning. Might want to concider it when you get into your tanks.
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Old 09-17-2010
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So the material that the fresh water is in contact with is gellcoat? Does that mean that I could have osmotic blisters bursting their yummy cocktail into my water supply? Not a good scenario. Any ideas on how to isolate the fresh water from the current interior of the water tanks? No amount of Tang can cover up the taste of hydrolyzed fiberglass resin!
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Old 09-17-2010
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Is really necessary to drink water from your tanks? Sure it costs a few $ more to buy bottled water but it's sure going to taste better. I never liked "tank" water myself.
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Old 09-17-2010
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Quote:
Originally Posted by deniseO30 View Post
Is really necessary to drink water from your tanks? Sure it costs a few $ more to buy bottled water but it's sure going to taste better. I never liked "tank" water myself.
But then you have all those damn plastic bottles which are toxic to make and never go away!
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Old 09-17-2010
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agreed, but still the water isn't likely to be nasty like tanks get. ew.
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Old 09-17-2010
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But then you have all those damn plastic bottles which are toxic to make and never go away!
You could get unflavored carbonated water in cans. I love that stuff.

You could also get 2.5 gallon sized water containers and pour into a cup.
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Grant.. if the tanks are glass.. maybe you can take the tops off and install water bags. they work pretty well. I have one we put under the port bunk for when we go on trips and need more water then the oem 35 gal. tees and valves are needed but not very $
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