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03-21-2020, 11:04 AM
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#1
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Senior Member
Join Date: Jan 2018
Location: Minneapolis, MN
Posts: 243
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Fresh water tanks- Scientist needed
Hello all you anxious RV folks waiting for the "all clear" from the CDC to travel again! We are in the same boat expecting to decide Friday on a go/no go for our Branson, Nashville, Asheville & Louisville trip on 4-11.
In the interim, I need a scientific mind to riddle me this: Once you have sanitized your RV fresh water system for the season do you leave water in the lines and tanks between trips (30-60 days) or do you drain all lines and tanks? I guess the scientific question is: Will germs grow faster in water or air in a sealed system?
Thanks for your considerate responses. Enjoy the ride!
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2018 Coach Novice
2008 MountainAire 4521
2018 Equinox toad
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03-21-2020, 11:11 AM
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#2
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Senior Member
Join Date: Jan 2017
Location: Titusville, FL
Posts: 5,164
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I've owned many RVs over the last 20+ years including 9 different motorhomes. I have yet to "sanitize" a fresh water tank and I've never had any issue at all. I never drain anything until it's time to winterize and I've probably only done that 5-6 times when I didn't winter in warmer climates.
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When seconds count, the police are only minutes away.
2023 Grand Design 2600RB, 2022 F-350 King Ranch tow vehicle, Titusville, FL when not on the road
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03-21-2020, 11:33 AM
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#3
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Senior Member
Join Date: Jul 2012
Posts: 2,565
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I do my tank with Spring Fresh because I can let it sit in the system a couple weeks. Only when we don't use that often. If filling with City water all the time, then I don't bother. If many tanks on well water then I will. Also use very good water filters, outside and inside. Have been doing it this was for the last 8 years.
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03-21-2020, 11:45 AM
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#4
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Registered User
Join Date: Aug 2019
Posts: 674
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Bacteria and Algae need what they consider as 'food'. For bacteria that some sort of organic material, which should not be in your system. And algae need light and some other 'fertilizer'. There are exotic microbes that can eat plastic but it's unlikely you have any.
So that being the case just what are you killing by sterilizing the system? Unless you contaminated the system in some way. I leave mine full of water.
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03-21-2020, 11:48 AM
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#5
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Registered User
Join Date: Oct 2017
Posts: 4,985
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In 40 years of owning campers, I have never sanitized a fresh water tank. When not in use, I will attempt to drain as much water out as possible, but that would be it. From a logical point, people usually don't drain their house hot water tank or pipes unless they are winterizing the house. If you cut open a old hot water tank or old water pipe, there will be all kinds of slime and scum on the inside, your immune system can handle it.
Actually, purified water is not good for a human body long term. Water is a good source of minerals and elements.
Story - I had a fellow worker that would dump out his water glass every morning and refill it with fresh water. I used to kid him that the water was probably 2-3 billion years old and just because it came out of a faucet, doesn't make it fresh.
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03-21-2020, 11:49 AM
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#6
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Senior Member
Join Date: Jul 2012
Posts: 2,565
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If you have an immune system!
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03-21-2020, 11:57 AM
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#7
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Senior Member
Excel Owners Club Winnebago Owners Club Ford Super Duty Owner
Join Date: Aug 2014
Location: Santa Fe, NM
Posts: 6,816
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1. Even if you drain the system there will still be plenty of water left in the tank bottom and low spots to keep the system plenty moist.
2. Few bacteria/viruses are harmful, many are required for good health.
3. Once I dewinterize my water systems and fill them, I'll keep them at least half full at all times. For quick departures if needed. AT home I fill from a deep private well. No problems ever. On rare occasions while travel we may encounter some foul water and then I'll deal with it as needed.
4. I usually treat the water system once on the spring.
5. I also think this problem looks differently in different parts of the country. I'm based in the arid southwest. Quite different than the humid SE say.
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Fred & Denise (RVM157) New Mexico
2007 Excel Classic 30RSO & Coach House 272XL E450
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03-21-2020, 12:09 PM
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#8
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Senior Member
Join Date: Sep 2018
Location: Moline, IL
Posts: 763
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When the moho is going to sit for a while, I add 12 ml of regular bleach (not gelled or scented etc.) to our 60 gallon water tank and fill it, and then run the faucets for a minute to pump it through the system. That's not enough Cl2 to worry about consuming, but enough to keep the water disinfected.
Quote:
I need a scientific mind to riddle me this:
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I was a certified California State Water Treatment Plant Operator III and Wastewater plant Operator V for 25 years or so.
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2014 Itasca Sunstar 31KE
1988 Itasca Suncruiser 31RQ
1968 Travco 21'
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03-21-2020, 12:17 PM
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#9
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Senior Member
Join Date: Feb 2015
Location: Grapevine, Tx
Posts: 5,635
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Yes, you should sanitize your fresh water system and then quarantine yourself for 14 days to keep from re-contaminating it.
Or not.....
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2004 Fleetwood Southwind 32VS W20 - SOLD!
ReadyBrute Elite towing a 2017 Ford Edge Sport
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03-21-2020, 01:54 PM
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#10
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Senior Member
Join Date: Jun 2015
Location: Chicago Area
Posts: 635
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If really worried an 1/8 teaspoon of 8.25% beach(1/4 teaspoon if 6%) per gallon of water let sit for at least 30 minutes. then run it through a good carbon filter to remove the chlorine taste.
All of our drinking water goes through a Berkey water purifying filter.
From the CDC.
- Disinfect water using household bleach, if you can’t boil water. Only use regular, unscented chlorine bleach products that are suitable for disinfection and sanitization as indicated on the label. The label may say that the active ingredient contains 6 or 8.25% of sodium hypochlorite. Do not use scented, color safe, or bleaches with added cleaners.If water is cloudy, let it settle and filter it through a clean cloth, paper towel, or coffee filter.
- Locate a clean dropper from your medicine cabinet or emergency supply kit.
- Locate a fresh liquid chlorine bleach or liquid chlorine bleach that is stored at room temperatures for less than one year.
- Double the amount of bleach if the water is cloudy, colored, or very cold.
- Stir and let stand for 30 minutes. The water should have a slight chlorine odor. If it doesn’t, repeat the dosage and let stand for another 15 minutes before use.
- If the chlorine taste is too strong, pour the water from one clean container to another and let it stand for a few hours before use.
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03-21-2020, 01:58 PM
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#11
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Registered User
Join Date: Mar 2015
Location: LA, Lower Alabama
Posts: 2,430
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I sanitize annually because I have a well and we use water sources when on trips. I also replace the filters annually and if sanitizing, do so without the filters installed. Makes no difference if you've been RV's for 112 years, do what's comfortable for you. I usually drain the fresh water tank after a trip which might last 2-3 months just to get "their water" out of there. Course I also clean grey and black tanks too.
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03-21-2020, 03:30 PM
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#12
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Senior Member
Solo Rvers Club
Join Date: Mar 2011
Posts: 849
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I have sanitized the fresh water tank and lines in the spring since 2006.
During the camping season if not on the road. I keep the fresh water tank full with my well water plus what was picked up on the road. If the camper is not used for 40 days or so in the hot weather. I drain the fresh tank and refill it. I also drain and fill before every trip.
Use the water for everything and no problems
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2007 Roadtrek 210 Popular
Chevy 6.0
2015 GMC Terrain
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03-21-2020, 03:36 PM
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#13
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Senior Member
Forest River Owners Club Ford Super Duty Owner
Join Date: Jul 2012
Location: So Calif
Posts: 3,536
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I guess it depends on what you are comfortable with doing. If you're using the rig often, then not necessary to sterilize the tank and water lines. If you happen to know you received some questionable water supply, then yes.
I drain and sterilize once a year before camping trips start for the season. Our city water is clean and fresh since the city adds chemicals to kill germs.
Been doing this for 35 years with no issues.
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"Well done is better than well said"....Ben Franklin
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03-21-2020, 04:01 PM
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#14
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Community Administrator
Pond Piggies Club LA Gulf Coast Campers Outdoors RV Owners Club Entegra Owners Club Skyline Owners Group
Join Date: Mar 2002
Posts: 40,775
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Been doing the same for 20 years. I don't drain between trips & that can be as long as a month during the RV-ing season for us.
Lori-
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2016 Phoenix Cruiser 2350S, 2018 Phaeton 40IH,2006 Bounder 36Z, 2004 Cougar 285EFS, 2000 Aerolite 25FBR
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