Cheers for the phone number but I won't be able to ring you as I am hard of hearing.
Look like I will have to get my mother to ring Mike at cleantech.
Dave
Last night I nearly made a 'tongue in cheek' post about you phoning Cleantech yourself and not getting your Mother to do it.
I'm glad I didn't! How stoopid would you have made me feel when you replied with 'I'm hard of hearing'.
Anyway, you definately need an RO system. I have a 200 gallon a day system which is capable of producing much much more than I require, since I only use around 100 to 150 litres per day (tops), but I like it because I don't have anywhere to store it in the Winter when it drops below freezing; apart from in the house. (RO membranes don't like being frozen; although mine have been on a couple of occasions, but they're still working fine).
I've read other posts from people saying they keep theirs running all night, regardless of the frost, and they don't freeze because of the effect the running water has. But I don't know how true that is.
Small ROs, such as mine are slow at making water! It just trickles out.
Therefore, I can set it up in the morning and it will make enough water, easily to last me through the next day; before I take it in, in the evening and put it away again.
This isn't the pain it might sound, since I can fill around 10 barrels up and fill two, two-hundred water buts up, on a weekend, and that will last me a week; just about.
Basically, an RO system filters most of the impurities from the water before it reaches the DI chamber in the RO, meaning the resin doesn't have to work so hard to 'polish' the water; making your resin last longer and more economical if you live in a hard water area.
But keep your DI. As you tailor your work to be more suited for WFP, you may find that a van with a small tank is better suited to your work, and you'd be able to quickly top up your pure water, from a customer's outside tap (make sure they're out; they might be on a meter
) using your DI system.
There's also a wealth of information about ROs (and almost any topic you can think of). Have a look using the search button at the top of this page.