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Old 30-03-2013, 15:22   #1
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Chlorine in Fresh Water

Do you use a charcoal filter to remove chlorine from municipal water taken aboard? Some say do, as chlorine can damage tanks and other equipment and it is bad for your watermaker. Others say do not since removing it takes away its ability to kill bacteria and, besides, unless you have an alu tank, you should be OK and the watermaker will have its own charcoal pre-filter. Probably should as as a poll, but what the heck.
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Old 30-03-2013, 16:23   #2
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Re: Chlorine in Fresh Water

Both schools are correct. We use a charcoal filter on the incoming water line, but we also go through our water quickly and continuously, so it is never sitting around in the tank for long.

Of course, it has been over a year since we saw a municipal supply - relying on rain and watermaker for our needs.

If you want to remove chlorine upon fill up, you need to use a charcoal block filter and a fill rate at no more than 1 gal/min. This means that a 100 gal tank will take 100 minutes to fill. Using a cheap charcoal dust filter like those in most hardware stores and full fill rate from the hose will not remove much chlorine at all.

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Old 30-03-2013, 16:36   #3
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Re: Chlorine in Fresh Water

We use a carbon filter both in the tanks and out the tank, always and I do not taste anything. It's not as tasteless as r/o water. I do get distilled water to service the watermaker, you can buy it everywhere.
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Old 30-03-2013, 16:37   #4
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Re: Chlorine in Fresh Water

It's mostly chloramine that is being added now. It depends on the municipality.

Chloramine - Wikipedia, the free encyclopedia
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Old 30-03-2013, 17:07   #5
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Re: Chlorine in Fresh Water

But the point is that it is removable by a charcoal filter if desired. But, again, only with a solid block filter using low flow rates.

I don't know how chloramines effect RO membranes.

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