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Old 08-16-2022, 04:09 AM   #1
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Fresh water tank odor

We are getting a slight odor when using our fresh water,if hooked to city water it goes away. That would indicate the problem is in the tank itself, any recommendations on how to solve the problem?
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Old 08-16-2022, 05:10 AM   #2
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We are getting a slight odor when using our fresh water,if hooked to city water it goes away. That would indicate the problem is in the tank itself, any recommendations on how to solve the problem?
I had a similar problem years ago. I bleached my tank and still the problem continued. Turned out to be my hose. I changed hoses to one meant for drinking water (those white ones) and have never had a problem since.
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Old 08-16-2022, 05:28 AM   #3
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Really, I never thought of that and I did use a regular hose. That would be an easy fix!
Thanks!!
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Old 08-16-2022, 08:26 PM   #4
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Really, I never thought of that and I did use a regular hose. That would be an easy fix!
Thanks!!
I relegated my old green hose to dedicated use for my black tank flush. Hope your problem has such an easy solution!
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Old 08-17-2022, 06:41 AM   #5
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I'd put a cup of bleach in the full tank run it through the plumbing and let it sit for a few hours then flush it all with fresh water (using that white hose)
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Old 08-17-2022, 10:14 AM   #6
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Potable water hose
Using a potable water hose is certainly a good idea on many levels. The chemicals used to produce a "garden" hose are not healthy and they often impart a taste and smell issue.

On the other hand, do you use the same hose for the city water connection and get no odor?

Contaminated water source
The source of water can also be a source for taste and smell issues. Make sure what goes in is clean. Add a sediment filter to the fill hose. Add a drinking water filter for problem sources.

Once biological contaminants have gotten into your system, they can live there happily forever. Sanitize to kill them.

Sanitize
https://uniquecampingmarine.com/blog...removing-algae

There are a lot of useless words to start with. Skip down to the "step by step" section.

Remaining sediment
In sever cases there can be sediment remaining in the fresh tank after sanitizing. The sediment can become a source of future taste and smell issues.

One owner reported cutting a hole in the bottom of the tank. Reaching in and mechanically cleaning the tank. He sealed it with silicone sealer and screws through a plastic patch.

Filtering input and periodic sanitizing can prevent more serious issues.

RV antifreeze
RV antifreeze can leave taste and smell issues even after it is flushed out. It may take a long slow flush to get rid of it. It depends on what materials your system were made from and what small side channels may be harboring anti-freeze.
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Old 08-17-2022, 11:26 AM   #7
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I'll toss out a a potential cure for tank odors: it could be the water heater. Your heater has a "mag" rod (technically MAGANEASE) rod that controls those odors. The rod gets corroded and needs replacing. It get corroded in order to reduce corrosion in the tank itself.

Go to Amazon and look up manganese rods. You will get lots of offers; take your choice. They are relatively cheap. Be sure about the fit, but they are common, so your chances are good.

You can tell if yours is bad by running the hot side water only. If it shows up from the hot side but not the cold, that's the source.

HTH

Tom
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Old 08-18-2022, 03:05 AM   #8
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Thanks everyone, I will try all the ideas!
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Old 08-18-2022, 04:43 PM   #9
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I'll toss out a a potential cure for tank odors: it could be the water heater. Your heater has a "mag" rod (technically MAGANEASE) rod that controls those odors. The rod gets corroded and needs replacing. It get corroded in order to reduce corrosion in the tank itself.

Go to Amazon and look up manganese rods. You will get lots of offers; take your choice. They are relatively cheap. Be sure about the fit, but they are common, so your chances are good.

You can tell if yours is bad by running the hot side water only. If it shows up from the hot side but not the cold, that's the source.

HTH

Tom

Do you mean magnesium? Water heater anode rods are used only in Suburban RV brand water heaters and are used to avoid corrosion rather than odors. They are magnesium, not manganese. Atwood brand water heaters do not use anode rods (they have aluminum clad tanks) so the OP should not install one.
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Old 08-19-2022, 03:49 PM   #10
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To remove taste and odor from fresh water plumbing use 2C baking soda dissolved in 1G water, pour into fresh water storage tank, fill with fresh water (use a known good hose), pump throughout plumbing system and allow to sit overnight. pump out/drain next morning.

No need to rinse, just fill with fresh water N go.
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