The confluence of societally impacting forces such as climate change, overpopulation, and overdevelopment are stressing freshwater reserves (see figure 1) [1,2]. Beyond issues of scarcity, fresh water quality is increasingly affected by pollution derived from agriculture and industry. Water reuse addresses water scarcity [3][4][5][6]. By water reuse, we refer to the use of technology to directly or indirectly recycle treated wastewater effluent for potable and non-potable applications, thereby augmenting existing water supplies. In the US alone, water reuse, if implemented, could meet up to 30% of the current public water supply demand [7]. Advanced water treatment technologies are required to reduce contaminant levels in reused water to acceptable values [8]. These same technologies have the potential to also remove those contaminants not addressed by conventional water treatment systems. Advanced oxidation processes (AOPs) have been identified as the basis for the treatment of difficult water, addressing contaminants that are difficult to strip, absorb or biodegrade conventionally

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