Domestic RO and water with high TDS

[Billsid]

I have a friend living in an area where the water is quite high in TDS ...around 4000 ppm...is this considered brackish water ?

Is it possible for him to install an RO unit for drinking water ? (he needs about 20 liters per day)...if so ,what kind of system would be suitable for him ? He doen't really care if he has to change membranes every 6-8 months but he needs to be sure that the RO water will be clean enough to drink it.

Are the standard domestic systems suitable for these applications ? or the standard TW30 membranes will not last even a day ?

Thanks...

[adife]

too high 4000ppm

if use Ro system from 4000ppm godown about 300-400ppm
so best way instanll a prefilter : like ultrafitration or mesh filter
then install RO SYSTEM to protect longer use life

[Andy CWS]

What other water test results do you have? Hardness, iron, sulfides, sodium chlorine?

More information would be needed.