sanitizing tank and lines - Escape Trailer Owners Community

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Old 02-12-2016, 07:40 PM   #1
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sanitizing tank and lines

We are leaving the frozen north for southern FL next week. Our 19 is winterized. The plan is to spend the first night without using water and then stop the second day(where it is above freezing) at a full hookup park and de-winterize (I'm sure that's not a word).

We want to sanitize the fresh water tank at this time. My question is how long should the bleach solution stay in the tank and lines before we empty it and rinse?

Thanks Caren
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Old 02-12-2016, 08:05 PM   #2
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Bleach works almost instantly, at home after one hour the stains are gone. Mix bleach and water, about 1 oz to 5 gallons water and let sit, rinse and you are done.
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Old 02-12-2016, 08:33 PM   #3
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I have seen people say several hours and I have seen them say overnight. Think I would wait a while just to make sure.
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Old 02-12-2016, 08:53 PM   #4
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Minnesota Department of Health says this:

• Chlorine at a concentration of 50 ppm with a contact time of at least 10 seconds.
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Old 02-12-2016, 09:06 PM   #5
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Closer to home for you, Michigan State University Clean, sanitize and disinfect | MSU Extension says this:

Sanitizing is the process of reducing the number of germs on a surface to levels considered safe by public health codes. This is done by using a commercial sanitizing product. The most commonly used and readily available sanitizing solution is regular chlorine bleach and water. The most important part of sanitizing is making sure to mix the solution at the proper ratio, then letting it stand on the surface for the recommended time. For example, bleach used for sanitizing should be mixed at a rate of one tablespoon bleach to one gallon of water, or a concentration of 50-90 ppm, and requires a contact time of 30 seconds. It is also important to test the concentration often to make sure the solution is consistent. Sanitizer test strips purchased at food service stores can be used to do this. While sanitizing reduces the number of pathogens on a surface, it does not kill all of them.
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Old 02-12-2016, 09:13 PM   #6
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They may be referring to bleach used on a surface, not very diluted bleach in water lines. Usually see 1/4 cup per 15 gallons or similar. Have never seen info for a trailer that says to put it in and take out immediately but maybe you have seen such directions.
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Old 02-12-2016, 09:18 PM   #7
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Go to the page or read the quote.
It says 50 to 90 parts per million. One tablespoon per gallon. For 30 seconds.
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Old 02-12-2016, 09:49 PM   #8
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I think Cathy is suggesting that a lower concentration (one-quarter of the university's recommendation) would be effective if in contact for a much longer period. I don't know if that is true - many physical effects do not scale this way - but perhaps it is.

One tablespoon per US gallon would be 80 tablespoons (1.2 litres) for an Escape fresh water tank (you want contact with the entire tank interior surface, right?), and if it were pumped out through all the lines everything would get suitable contact.

I think if I'm going to put whole tankfulls of water through the system, I would use enough bleach to be sure that I have an effective concentration.
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Old 02-12-2016, 10:03 PM   #9
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I don't know. Argue with Michigan State University.
And rinse thoroughly.
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Old 02-12-2016, 11:43 PM   #10
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I was not really meaning to say that less concentration requires longer but, in fact, that may be the case, Brian. A 19' has 20 gallons and a 21' has 30 gallons and I don't know about the other models. With Glenn's info of one tablespoon (TBSP) per gallon, that is 30 TBSP for a 21', assuming one wants to fill the tank to sanitize it and not only the lines. One cup has 16 TBSP.

The recommendations I have seen for trailers often would be a 1/2 cup for the 30-gallon 21'. So that would only be 8 TBSP or a little more than a fourth of the concentration that your info has, Glenn. Why they would say to use less for longer, well, maybe they figure it is then easier to rinse out, or no sense in removing right away. And if it sits for hours, they expect that will do what the larger concentration does. Don't know if that is true or not. Just know that the recommendations are for using much less bleach but for many hours so it looks that way. Thanks for the info, Glenn. So if we want to be really fast, we can quadruple the bleach.

Hope you can get that all straight, Caren!
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