The net production of potable water is difficult to estimate at this stage and depends on {TAIL ~ the government tolerance level} of Ca++, Mg++salts after {HEAD ~ dilution} 
The net production of potable water is difficult to estimate at this stage and depends on { TAIL ~ the government tolerance level } of Ca++ , Mg++salts after { HEAD ~ dilution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD