[JackieW]

I am still looking into going over to WFP. I managed to get a friend to measure the TDS of our tap water and it varies between 140 and 150.

I'm asking does that mean I have to get an RO unit or can I just use DI?

To answer my own question:
 I think, after reading much good advice on this forum, that I can use just DI but it will work out more expensive in the long run.

I am thinking that I'll need to be fitting an RO unit in my home to produce the water, with or without a DI unit attached?  then pump it into a removable (need van for other work quite often) tank  in the van ready to be pumped to pole. Do I need another ''polisher?'' DI on the van  prior  to final outlet?

Thanks again for any info and opinions.

[Ian Rochester]

Yes, if using DI only you'll be going through resin at a tremendous rate

[Pj]

And don't connect it to that outside tap whatever you do.

[johnny bravo]

i was talking to a chap this morning he told me he produces pure water in his shed,   told me he charges £1   to fill a 25lt barrel,      is this good. if just using trolley or back pack  for tops only.

[colin purewater]

i was talking to a chap this morning he told me he produces pure water in his shed,   told me he charges £1   to fill a 25lt barrel,      is this good. if just using trolley or back pack  for tops only.

I'd say! £10 for 250 L
No messing filling up changing resign
Or buying ro...

Not bad at all mate

[cubanpete]

Pj
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   Re: Tap water TDS is 150. Do I need RO?
« Reply #2 on: Today at 01:56:13 pm »    Reply with quote
And don't connect it to that outside tap whatever you do. Grin


Why not connect to an outside tap?

[JackieW]

I think he's referring to this post I made earlier  'http://www.cleanitup.co.uk/smf/index.php?topic=145273.0

[geefree]

my tap water is around 150, i use a 300 gallon per day ro unit... it brings the reading to 00.00

ro is is the van , tank in the van... simply link to outside tap and let it fill overnight.

[JackieW]

Thanks for replies. With an RO unit in the van, am I correct in saying that there is a lot of waste water that has to be disposed of?

[geefree]

50/50 .......thin blue hose goes straight into the tank,  pure.... the red hose goes straight into the drain.

[Pj]

I think he's referring to this post I made earlier  'http://www.cleanitup.co.uk/smf/index.php?topic=145273.0

Crect

[AS Window Cleaning]

I wouldn't say resin only would work out hugely more expensive, 150 isn't massively high for resin only (below 100 would be better.)

if your on a meter could have benefits going resin only, no waste water, quick filling, can fill from customers too if needed.

I would now always go RO route tho, if gonna b window cleaning long term wfp might as well commit to it and get the proper kit if can afford to.

[dazmond]

DI only would work out very expensive if you used say 350-400L A DAY.my tap tds is 35 and i go through around 2-3 bags a year.

so around £200-£250 a year for purifying my water which isnt too bad.yours would be way more expensive.gardiners have a resin calculator.input your tds and see how much roughly it would be!

[dazmond]

it would cost you £1300 a year if you used 6000L A MONTH over 10 months of the year with a tds of 150.with a 25L BAG costing £80.

an RO is a must i think!!

[Londoner]

Yes, if using DI only you'll be going through resin at a tremendous rate

 Not that tremendous, you could live with it but It would be a pain. What I am saying is its not completely beyond possibility.  Financially its affordable, the bigger drag would be having to keep changing the resin. But I have discussed it with a mate who has nowhere to put a RO.