What concentration do you ...
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
What concentration do you have.? It is usually not necessary to remove selenium from water unless it is well above the WHO Guideline or EPA standard (50 ppb is very conservative). Selenium is actually beneficial and an anticarcinogen. If you must remove it do not use RO! Activated alumina works and is much cheaper.