RO systems and thermal ...
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
RO systems and thermal systems can easily achieve100 to 500 mg/L in product water. Depending upon factors like membrane type and operating conditions. Gulf water can be above 50,000 TDS so that makes it a bit more difficult. The WHO does not have a guideline for potable water but it suggests up to 600 mg/L as desirable for consumers.
Joseph Cotruvo