But is it "all" contaminants or "potentially almost all" contaminants?

Dr Aravinthan's paper on the Toowoomba Water Futures website makes an interesting statement:

"Therefore, a multiple barrier technique making use of activated carbon, ultrafiltration and reverse osmosis could potentially remove almost all the newly emerging contaminants from the tertiary treated wastewater effluent."

We're not really sure but potentially it could remove almost all the contaminants in the water.

See - Dr Aravinthan's paper.

Obviously no guarantees ...