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Old 01-18-2018, 12:06 PM   #1
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Do use a UV Sterilizer on your water maker

Weíve been cruising the PNW waters for a couple of years now and rarely use our WM. As we move south into Mexico Iím wondering what others do, if anything, to sterilize WM water.

Do you use a UV sterilizer, use chlorine or bleach, or nothing at all?
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Old 01-18-2018, 12:30 PM   #2
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We’ve been using a water maker for 20 years with five of those in Mexico and have/do not use a UV sterilizer. We have friends that have them. We keep our tanks clean and turn the water over regularly.
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Old 01-18-2018, 12:59 PM   #3
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We had a UV filter on a previous boat and in out RV. Small unit that we had hooked to small faucet in galley and icemaker. Worked well I guess because we never got sick, but I donít know that we needed it or not. We donít have one in our current boat and I often wonder if we should put one in.
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Old 01-18-2018, 01:12 PM   #4
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We use UV sterilizer and don't make water in harbors, etc. We drink and cook with the water. So far, no one has gotten sick.
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Old 01-23-2018, 09:33 AM   #5
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These units are not large , so it should be possible to use the unit when taking aboard water from a land source ,

and then move it to treat the tank water.

The unit must be ON before water flow to work the best, .
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Old 01-23-2018, 03:00 PM   #6
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No we don't either. In fact our water from our water maker is cleaner than tap water.


BTW, NEVER NEVER EVER use chlorine. It will destroy your membranes.
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Old 01-23-2018, 03:12 PM   #7
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Quote:
Originally Posted by FF View Post
These units are not large , so it should be possible to use the unit when taking aboard water from a land source ,

and then move it to treat the tank water.

The unit must be ON before water flow to work the best, .
.

Yup, but the unit has to be sized correctly or you need to slow the flow rate down from the land source. I asked a friend who has one on their boatís RO system. He says his is rated for up to 3 gallons per minute.
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Old 01-23-2018, 03:24 PM   #8
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Yes, we do.
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Old 01-23-2018, 05:00 PM   #9
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Quote:
Originally Posted by goboatnow View Post
Weíve been cruising the PNW waters for a couple of years now and rarely use our WM. As we move south into Mexico Iím wondering what others do, if anything, to sterilize WM water.

Do you use a UV sterilizer, use chlorine or bleach, or nothing at all?
Water maker water is already extremely clean, so not sure you need to supplement it. Having said that, UV sterilizers are very effective, I've used scores of units from Atlantic Ultraviolet. One of these along with a sediment and carbon filter and you'll have very clean water.

Keep this in mind, however, never back flush a water maker with chlorinated water, it will ruin the membranes. And, if filling your tanks with municipal water don't use a carbon pre-filter as it will remove the chlorine, which will lead to bacterial growth in the tank. It is, however, to remove chlorine as the water is being used, after it's left the tank. This article (written for the industry) covers the subject, including UV filtration, in detail http://stevedmarineconsulting.com/wp...-02-Part-1.pdf
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