Water Treatment Plant built in the 80’s to treat (remove) arsenic and fluoride.
asked 24 August 2017 asked by wagdan (420 points)
The canadian drinking water guilines and the EPA are still considering this type of treatment so it should be safe. As for telling you if the process is still use I only know one community with arsenic problem and this is the process they use.
Activated Alumina is expensive.
For arsenic convert arsenic(III) to arsenic (V) via chlorination. Then use RO.
For Fluorides use RO.
RO gives good rejection of these ions.