Two Aquarolls

a typical thetford 250 cassette has a capacity of 17.5ltr...

assuming a bit of 'spare' when emptied after three days, that might be, say, 13/14 ltrs...

now bring that back up to the five days of the other water containers and youre not far from the 'missing' 17ltr assuming a bit s is absorbed by the body and not all becoming waste.

. . . and, of course, people will "go" when away from the site.

We once saw, on a Club site, a set up with a huge black tank/cistern beside the van, instead of an Aquaroll.  Must have been the capacity of at least 3 Aquarolls.  This was filled from a nearby tap with a long hose......took a while to fill!.

Good idea if staying a while I suppose, but rather bulky to transport.

Only one Wastemaster though.

Well what a huge response, didn't realise it was such an emotive subject, so again thanks to all, especially the more kind answers, but I shall now bring my question to a close. I have now decided on my own course of action, quite simple really as it will solve my query, not going to say what, but it does not involve another 'roll. Thanks again, enjoy all your hols.

Aw, come on, don’t keep it yourself yourself. Your solution may help someone else and save them struggling. After all, we're here to help each other.🙂

and how anyone can make one last 5 days, I just don't know!

Please pay attention you keep filling it up with a 5 litre container.

Pay attention, Dave! 

This is what Alan said back on page 2 -

"Except for Christmas an aquaroll will easily last our normal 5 night stop. Christmas has usually been 15 nights and I have a 5 litre container for topping up"

So, yes, an aquaroll will last him 5 days. (The 5 litre container was for longer stays.)  Not sure quite how myself, I used to refill ours each evening, only 2 of us and we'd still get through best part of one a day! 

Must admit I took it to mean he used the 5 litre container all the time and not just at Christmas. It is beyond me how you can make one Aquaroll last 5 days. Only 2 of us also and 1 only lasts for 1day

"I find the aquaroll needs filling at least twice a day if we're not plumbed in, and how anyone can make one last 5 days, I just don't know!"

so, if it needs filling 'at least twice a day' im guessing youre using 80-100 ltrs a day? would that be right? ...and that you'd need to empty the wastemaster 2 to 3 times a day? thats a mighty amount of water moving  in and out.

it just shows how folk use water differently.

we certainly dont feel we ration water at all yet use around 22 ltr a day, even when we both shower in the van...this means we can live in the van for 5-6 days without requiring any water.

when using site showers, which saves us water, our usage is around 10-12 ltrs a day, incl washing up, tea/coffee, loo flushing, teeth cleaning, hand/face washing etc...  

as i said, its interesting how one user can use 4 to 5 times as much as another doing, basically, the same things.

perhaps, when folk are on serviced pitches (and input/output water supplies require no attention) taps might get left running for longer...?

either way, it makes no difference, just a stark contrast.

I used to buy spring water in as big a container as I could find & sit it near the kettle, the hog water was for showers & dishes so it lasted a fair while. Not being in most of the day helped too👍🏻