Fresh water question (1 Viewer)

Nov 6, 2017
128
235
Huddersfield
Funster No
51,280
MH
Dethleffs Trend t7051
After owning our Motorhome for 5 months, we have just got got round to reading the manual in detail. One of the recommendations is that we should drain all the fresh water out of the system after every trip and then clean out the system.In 5 months we have not done this and have had no side affects, does this sound right. Sounds to much like hard work to me.
 

pappajohn

LIFE MEMBER
Aug 26, 2007
42,956
46,981
Dark side of the moon
Funster No
172
Exp
Since 2005
Does it also tell you how to clean out the system... The sequence of cleaning and with what ?

Let me answer that...... NO!

Written by someone brought up in a sterile environment and covering their own arse.

Algea and bacteria generally need sunlight to breed... Your tank and pipes will rarely see daylight.

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Sep 12, 2016
2,249
4,985
Chesterfield England Tellus 3
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45,091
MH
Lunar Roadstar 800
Exp
6 years
WE only drain when we are not using the van for a while ( even when parked up I use the van for an art studio)

When we plan on using abroad is the only time we sterilise before and after a trip

And as we never leave the van unused there's no need tank is on-board not under slung and the water heater is right next to it so it should never freeze
the waste tank is always open at home so never has water left in so as it's under-slung it doesn't get chance to freeze
 
Oct 29, 2016
4,361
47,704
Surrey
Funster No
45,842
MH
Carthago C Tourer
Exp
Motor Homing 5 years, caravan previously
If the van is being sat unused for a couple of weeks or longer I drain the fresh water tank, dont know why really as the tank is weather proofed between floors inside the van and .....we only drink or make Tea/Coffee with fresh water or bottled water, as I cant stand the taste of water stored in a caravan or motor home.
Les
 

ymfb

Free Member
Jun 16, 2017
798
6,347
Salisbury
Funster No
49,040
MH
AS Kingham
Exp
Since 2009
We only use the water for boiling, showers and toilet. We have never cleaned it in 2 years, so far no deaths.
 
Jan 8, 2013
8,395
11,383
Dronfield - Derbyshire
Funster No
24,202
MH
Burstner Lyseo 690G
Exp
Happy FLT since 2011
After owning our Motorhome for 5 months, we have just got got round to reading the manual in detail.

And that's where you went wrong - that and buying a German van.

We never clean the water system - we don't even drain it except in the winter to stop any damage to the taps (freezing).
Don't worry about it youll be fine - or at least no worse than me:Eeek:








ps - I have a German van
 
May 17, 2017
505
3,388
Shropshire
Funster No
48,672
MH
Knaus Coachbuilt
Exp
Since 2009
If you use the van regularly and keep emptying and filling up, the fresh water tank stays fairly clean. If it’s left standing for a while empty out the water and leave the taps open to air the system.

If you want to clean the water tank because you’re worried about drinking or cleaning your teeth in the water, then use vinegar or citric acid. It works well, fairly cheap on eBay and will help get rid of any limescale, particularly in the boiler. There’s plenty of YouTube clips telling you what to do.

Personally I wouldn’t use chlorine based sterilisers for health reasons, unless you are careful and rinse the tank out very well.

We don’t clean ours out every year, mainly because we use the van a lot and the water is clean. Also we tend only to drink it in tea, after it’s been boiled.

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Aug 29, 2010
828
1,200
Nuneaton. Only when I have to.
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13,456
MH
Hymer Exsis t564
Exp
Since Sept 2010
As others have said, the tank is not exposed to sunlight which might encourage algae to grow and, in any case, the water you refill with is, presumably, potable..ie chlorinated. So why would you need to do anything? However, if you get home and leave the van 'inactive' for a significant period, you might feel more secure if you drain down, refill with tap water plus a handful of Puritabs, drain, flush through and start again. Me? I wouldn't bother.
 
Nov 3, 2016
856
1,509
Derbyshire, UK
Funster No
45,901
MH
Bailey Autograph
Exp
Since 2016
Also in the don't bother group.

Its filled with tap water that has the usual cleaning agents from the water factory o_O

mainly its just used for showering. Washing Pots and brushing teeth and the van gets used at least once a month and refilled so cant see any point. You don't clean your house pipes and they have been in for over 50 years now.

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mfw

Banned
Sep 16, 2017
1,224
508
Worthing
Funster No
50,537
My water tank felt slimy inside so i cleaned it out - i now drain it if it sits for more than a couple of weeks and leave the tank dry - but my tank has a drain plug fitted so to pull plug in tank and set boiler draining takes less than a minute tank is dry then - my tank is a black one and under seat so no sunlight problems but side of tank felt slimy.

If draining tank was time consuming id probably only do it end of year when temperatures start dropping
 
Mar 23, 2012
9,096
29,682
sleights
Funster No
20,245
MH
c class
Exp
1
I always drain after every trip as I think the chlorine in the water dissapates after a while. I have never got around to using a cleaner though.
 

scotjimland

LIFE MEMBER
Jul 25, 2007
1,436
5,155
UK
Funster No
15
MH
Timberland
Every time you fill up you are sanitising the tank and pipework with the chorine in the tap water.. more than enough to keep it clean and fresh.. however, if it's left standing for a while it can become a bit stale, so I generally drain down after each trip.. flush and refill before next trip.

in 40 + years of camping, caravanning and motorhoming , have never bought bottled water, no one has ever been ill from drinking fresh tap water stored in a water carrier, Aquaroll or storage tank ..

I don't understand the logic of this.. It's safer to drink tank water than bottled.. for both the environment and your health !!

If the water has a 'taste' it's either in your imagination or the system is contaminated and cleaning with a proprietary cleaner such as Puriclean should do the trick .

Advertising has a lot to answer for, including trashing the seas and oceans with plastic.. :(

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mfw

Banned
Sep 16, 2017
1,224
508
Worthing
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Have noticed when abroad that you see some people wash their toilet cassettes from the same water source that people get their drinking water supply from so if always replenishing not too bad but leave it sitting to long probably a good chance harmful bacteria would grow
 

scotjimland

LIFE MEMBER
Jul 25, 2007
1,436
5,155
UK
Funster No
15
MH
Timberland
Have noticed when abroad that you see some people wash their toilet cassettes from the same water source that people get their drinking water supply from so if always replenishing not too bad but leave it sitting to long probably a good chance harmful bacteria would grow

disgusting people..

If I suspect this, I spray the tap with a dilute bleach which I also use for washing around the top of the cassette.. .. then let the tap run to flush it before using my own hose connector..

the same reason I never use a hose that is connected to the tap..

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May 31, 2015
10,923
39,389
Cornwall
Funster No
36,638
MH
Ducato PVC
Exp
Getting Better
Every time you fill up you are sanitising the tank and pipework with the chorine in the tap water.. more than enough to keep it clean and fresh.. however, if it's left standing for a while it can become a bit stale, so I generally drain down after each trip.. flush and refill before next trip.

in 40 + years of camping, caravanning and motorhoming , have never bought bottled water, no one has ever been ill from drinking fresh tap water stored in a water carrier, Aquaroll or storage tank ..

I don't understand the logic of this.. It's safer to drink tank water than bottled.. for both the environment and your health !!

If the water has a 'taste' it's either in your imagination or the system is contaminated and cleaning with a proprietary cleaner such as Puriclean should do the trick .

Advertising has a lot to answer for, including trashing the seas and oceans with plastic.. :(

Agree Jim... how many people drink water from plastic bottles that have been standing in a yard somewhere in full sunlight for what could be months....

But because they buy from a shop possibly out of a fridge unit they think it’s great...(n)
 

scotjimland

LIFE MEMBER
Jul 25, 2007
1,436
5,155
UK
Funster No
15
MH
Timberland
Agree Jim... how many people drink water from plastic bottles that have been standing in a yard somewhere in full sunlight for what could be months....

But because they buy from a shop possibly out of a fridge unit they think it’s great...(n)

indeed. also
Tests on major brands of bottled water have found that nearly all of them contained tiny particles of plastic.

Plastic has now been found it the human gut
 
Nov 3, 2013
3,102
8,814
Portugal
Funster No
28,868
MH
Fiat Ducato Auto Wildax
Exp
C/van since '73 .M/h.2009
Hi.
If the unit has been stood 3/4 months i drain down and refill to go away again for no other reason than it makes me feel better and some of the places i refill from while away may,just may.. be not so good.
Tea Bag.
PS. I have a tap at the end of the drive.........(This helps(y))

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DBK

LIFE MEMBER
Jan 9, 2013
17,910
47,661
Plympton, Devon
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24,219
MH
PVC, Murvi Morocco
Exp
2013
If you have a gauze filter on the inlet to the water pump it is worth looking at it occasionally. Ours has a clear cover and is easy to get at. Earlier this year the filter was partially blocked with some sort of brown mould which had come out of the water tank. I drained the tank and flushed it through then filled it and added sterilising tablets. Left it overnight then drained and flushed it again.

The problem is you can't be sure of the quality of the water you are using to fill it. We had leaves in the water when we filled it at a France Passion site once. :)
 
Dec 16, 2017
1,187
2,385
Almuñécar, Spain
Funster No
51,665
MH
Low Profile - Globebus T7
My water tank felt slimy inside so i cleaned it out - i
Not sure but I think that's what's called Bio Film. Our Gaggia coffee machine has a water tank and that feels 'slimey' if not cleaned regularly, but as far as I know it's not dangerous???
 

Silver-Fox

LIFE MEMBER
Sep 5, 2014
9,033
26,673
Cheltenham Spa
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33,201
MH
Rapido
Exp
im a not so newbie
Agree Jim... how many people drink water from plastic bottles that have been standing in a yard somewhere in full sunlight for what could be months....

But because they buy from a shop possibly out of a fridge unit they think it’s great...(n)

Out of interest did you ever give Dolly’s tank a clean out?

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mfw

Banned
Sep 16, 2017
1,224
508
Worthing
Funster No
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Not sure but I think that's what's called Bio Film. Our Gaggia coffee machine has a water tank and that feels 'slimey' if not cleaned regularly, but as far as I know it's not dangerous???
Just looked up biofilm and i would imagine we are talking same type of slime says it is living and dead bacteria obviously due to tank sitting with water for an amount of time with no movement of vehicle or water throughput
 

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