Water Sterliser advice needed

Adrian Allaway
Adrian Allaway Forum Participant Posts: 28
edited March 2021 in Motorhomes #1

When I had a caravan with an outside water container I was advised to use a sterliser tablet each time I filled it up. I now have a Devon Aztec panel van conversion motorhome with the on board water tank. What is the general advice in terms of sterilisation with this system. Is it important and how and when do I need to do it. Any specific products needed or recommended.

Thanks for any advice.

 

Adrian

Comments

  • Bakers2
    Bakers2 Forum Participant Posts: 8,192 ✭✭✭
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    edited March 2021 #2

    After reading comments on here about damage that could be caused to heating systems and filters we never sterilised ours!

    When we purchased it secondhand I did fill the fresh water tank and add milton then emptied without pulling it through taps etc. We brushed our teeth in the motorhome and used the water to boil for hot drinks, showered and washed up in there. Never had an issue.

    Our water tank was always fully emptied after use, via the exit bung which remained out and screwtop filler were not re inserted so there was airflow and it was dried out inbetween trips. Before heading off, bung was inserted and about 10 litres of water put in enough for a cuppa, toilet flush and hand washing on route. Once we arrived on site we filled the tank completely.

    Our water tank was conveniently located under a seat with a screw in cap and the exit bung could be reached using entry that way. It also had an external filling flap. Not sure how it would be on your vehicle.

  • peedee
    peedee Club Member Posts: 9,387 ✭✭✭
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    edited March 2021 #3

    Another one with the same view as Bakers2. How many of you bother to sterilise your house water tanks in the loft space, that is unless you have a pressurised system of house water distribution!

    peedee

  • allanandjean
    allanandjean Forum Participant Posts: 2,401
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    edited March 2021 #4

    Never had MH but presume that the reason I occasionally sterilise my Aquaroll, the fact it’s sitting out in the sun and a slight ‘slime’ builds up, won’t apply.

  • LLM
    LLM Forum Participant Posts: 1,555 ✭✭
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    edited March 2021 #5

    If it is a new van I would suggest a through flush and follow the advice given above by others.  However, I do use KATADYN MICROPUR CLASSIC MC 1'000F if I am going to leave the van unused for a while.

    If the van is pre-loved (new to you) I suggest a through flush then make use of the following to clean, sterilise and maintain the system KATADYN MICROPUR TANK CARE LINE MICROBOX.

    Fact sheets are on the Katadyn website.

     

  • brue
    brue Forum Participant Posts: 21,176 ✭✭✭✭✭
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    edited March 2021 #6

    Hmm, well I remember how my brother in law felt when he discovered a dead bird in his loft tank....

  • DavidKlyne
    DavidKlyne Club Member Posts: 13,859 ✭✭✭
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    edited March 2021 #7

    I think it depends whether you intend to drink water from the tank. Personally we don't so I don't fuss too much about cleaning the tanks. In the past I have use Puriclean which comes in powder form which you dissolve in a jug of water and pour into the full tank water. Let slosh around a bit and then pump it through the system. You then of course have to flush with clean water otherwise there will be a taste left!   

    David

  • LLM
    LLM Forum Participant Posts: 1,555 ✭✭
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    edited March 2021 #8

    The loft tank should never have supplied any of the drinking water.

  • Unknown
    Unknown Forum Participant
    edited March 2021 #9
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  • brue
    brue Forum Participant Posts: 21,176 ✭✭✭✭✭
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    edited March 2021 #10

    Thank you LLM, I think my BIL didn't enjoy the prospect of anything in his water system...a lid had come loose. And it's just worth a thought that water tanks are better for a clean out than not, bacteria can grow anywhere. smile

  • ABM
    ABM Forum Participant Posts: 14,578
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    edited March 2021 #11

    Adrian,

     We have had many threads on this subject over the years but  Vic the Vline posted one only t'other day  ( 4th March )  and lots of us agreed that Puriclean / Aqua Sol / Purisol are good for this tank cleaning / sterilising job  and are available from your friendly Campervan / Motorhome store. So treat the stores as a Library and read all the instructions on the containers before buying  innocent. Take care with the Milton type stuff 'coz it can attack any metalwork in the pipes ( taps, pumps and suchlike )

  • commeyras
    commeyras Club Member Posts: 1,853 ✭✭✭
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    edited March 2021 #12

    I always thought that using Milton to sterilise the water system could corrode the water heater.  I understand Trauma advise against its use.  I  use Puriclean at the start of the season.  

  • DSB
    DSB Club Member Posts: 5,666 ✭✭✭
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    edited March 2021 #13

    We tend to use Puriclean.  It's custom made for the job and will not have adverse effects on the water heater/ system.  Not that expensive to buy, so I would use the item made for the job... it's available in powder or tablet form.

    David 

  • JimE
    JimE Club Member Posts: 353
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    edited March 2021 #14

    Our inboard water tank holds up to 120 lires (about 4-6 days supply) and I don't fancy drinking from that after it has sat around in 25-30 degree heat.

    We use a Britta filter jug for cooking/drinking water topped up from a 5 litre water container which is replenished daily.  The supply in the tank is really only used for washing, showering and washing up.

    If we're not going away again in the near future, I empty our water tank completely when we get home, although I try to time it so that the tank is almost empty for the return journey.

     

  • Aspenshaw
    Aspenshaw Forum Participant Posts: 611
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    edited March 2021 #15

    My advice is to get a tub of Puriclean and see how you get on with it. Once a normal year is usually sufficient if you are drawing water from safe sources such as CMC sites. If you regularly use the van throughout the year, you may not need to do anything. Don't leave the water in the tank or pipes for more than four days, less if in hot weather and drain the tank when you get home (see JimE above).

    If Milton is not used correctly, neat/strong it can overtime damage any metal parts such as in the heater. Sufficiently diluted, and I used it for many years, Milton was fine. I changed to Puriclean because it was easier to buy and less risky.

     

  • cyberyacht
    cyberyacht Forum Participant Posts: 10,218
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    edited March 2021 #16

    I did mine yesterday. I certainly don't drain down between trips. It sits on the drive with whatever volume it has in it. Never had a problem with the yacht's tanks either and the water tended to sit in that for a lot longer before use than the motorhome. Happiness is full tanks. laughing

  • LLM
    LLM Forum Participant Posts: 1,555 ✭✭
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    edited March 2021 #17

    Puriclean contains a considerable amount of chlorine which can damage some parts of the system particularly Alde.  Flushing after use is very important.

  • kenexton
    kenexton Forum Participant Posts: 306
    edited March 2021 #18

    I made the mistake of cleansing the freshwater tank in our first MH with Milton and regretted it.The water tasted of TCP thereafter-we do not drink from the tank supply but it made teeth cleaning unpleasant.Since then I have stuck to Puriclean with no problems resulting.I do occasionally flush the tank out to remove sandy sediments-these seem to get into the tank after trips abroad.Do they use sand filtration more on the Continent?

  • Holliebobs
    Holliebobs Forum Participant Posts: 1
    edited March 2021 #19

    Your heating system is completely   separate to any drinking water .

    it is impossible to mix the two. 
    so using Milton cannot therefore hurt your heating system . On another point it is very important that the cleaning of your water system tanks takes place if you intend to use it for drinking or washing .

  • bikemad99
    bikemad99 Forum Participant Posts: 2
    edited March 2021 #20

    I drain our water before the first frost,then refill at home when frosts have finished.I then keep it topped up through the summer.I have never put any cleaner in it and we drink it direct from the tap.Had the van 14yrs and never had a problem,if it aint broke dont fix it. We are from a time before elf & safety so maybe immune to most things.Happy touring.

     

  • nelliethehooker
    nelliethehooker Club Member Posts: 13,636
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    edited March 2021 #21

     Does that mean that the water in your tank has been sat there For the last month or more, without being changed? I certainly would want to be drinking it now.