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post #1 of 17 Old 03-03-2019 Thread Starter
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under sink uv filter

Ok so youtube has my wife all in a tizzy....
One of those sailing channels showcased a under the sink uv filter, and pretty much said you need to have one.
Of course the one they have and will give a discount code for is 550.00
Seems like a uv light bulb and a stainless housing and a walwart…
We leave the dock for a few years in a couple of months, I have a watermaker already, so no chlorine in the tanks for me.

Questions, yes I did a search but was seeing 2014 answers and still didn't really get what I was looking for...

Do any of you live aboards have a uv filter? Which one?
Is this something I really need? (remember the wifey now thinks this is a must have piece of safety equipement)
How do you know the thing is doing what it's supposed to do?
I read about a warm up period, do they all have that?

When I typed uv water filter on ebay and I'm sure amazon you can get one for 70 shipped, other than they were 120vac what's wrong with those?

I would like to keep that 550 in my pocket so help me reassure my wife that we will not die drinking water!!!!

Bob
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post #2 of 17 Old 03-03-2019
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Re: under sink uv filter

UV is not a filter. UV will sterilize/sanitize the water. I installed one in a house that only turned on the bulb when the well pump ran. Pretty sure the ones for under the sink on boats run all the time so you will need to replace the bulb about every year. IF you go to the web site www.viqua.com there are instruction manuals that will explain installation and operation. If you have an inverter (12 DC to 120 AC) I see no reason why a 120 vac model wouldn't work.

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post #3 of 17 Old 03-04-2019
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Re: under sink uv filter

Sailed to the Andamans. and rewatered many times no water maker. Had a UV under the galley sink. May have worked but I can tell you ,not well enough!!
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post #4 of 17 Old 03-04-2019 Thread Starter
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Re: under sink uv filter

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Sailed to the Andamans. and rewatered many times no water maker. Had a UV under the galley sink. May have worked but I can tell you ,not well enough!!

kind of what I'm worried about snake oil salesman!!!

Bob
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post #5 of 17 Old 03-04-2019
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Re: under sink uv filter

I have sailed all over the world and have never needed an UV water purifying system. Maybe I was just lucky for the last 5 decades, who knows?
However, when I did research these units two things came to light. First, the bulb (which I thought quite expensive) was only good for a year or so and second, nothing could get through my watermaker membrane that these units would be useful in killing. Mostly it was to be used for your tank water before the sink and as you mentioned they used 115 VAC, which meant every time I turned on the tap, I'd have to produce 115 VAC from somewhere. Seems much cheaper and simpler to keep my tanks clean.
However, if I were ever to consider moving ashore in the US, one of these units might be very high on my list as I hear the water quality in many American households has deteriorated a great deal since I was a kid.

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post #6 of 17 Old 03-04-2019 Thread Starter
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Re: under sink uv filter

I'm not defending the one that the youtube channel was hocking but it's led and 12v, it only comes on when you use their special powered tap.

Up to the point of seeing that video I have never heard of anyone having such a device in their home or boat. But my wife is the bottled water buying type of gal.... Just that alone might save me the cost of this unit if she feels ok drinking tank water instead of buying bottled. We have been living aboard for the last few summers and she would buy bottled water, even thou I would bleach the tanks every spring....
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Re: under sink uv filter

Don't let her anywhere the internet or a TV these days then. The reports coming out on the quality of the bottled water being sold is absolutely shocking. Tap water in Grenada is less contaminated, it seems.

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post #8 of 17 Old 03-04-2019
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Re: under sink uv filter

If you are really concerned about this, just put some chlorine bleach in the tank every time you fill up with water and put a carbon filter in the water line to remove the chlorine taste.
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post #9 of 17 Old 03-04-2019
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Re: under sink uv filter

Even more interesting is food. Unless you live in a plastic bubble and never eat ashore or eat anything that is not cooked (fruit etc), there is only so much you can do re. water. Thus, there is a point of diminishing returns; once water safety reaches a certain point, it will be something you ate, a hand shake, a sneeze... something.

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post #10 of 17 Old 03-04-2019
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Re: under sink uv filter

Quote:
Originally Posted by JimsCAL View Post
If you are really concerned about this, just put some chlorine bleach in the tank every time you fill up with water and put a carbon filter in the water line to remove the chlorine taste.
Be careful of the chlorine concentration. Do some research on chlorine concentration (PPM) vs health issues. Maybe a pool test kit would help.

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