To reduce the health risk from phenol exposure through consumption of contaminated shallow well water, a research group lead by T. Phenrat, the first and corresponding author of this present article, was assigned by the government to develop and install ozonation units to eliminate phenol from the drinking water (Figure S1b)). We were successful in equipping 40 Nong-Nea households with ozonation units capable of oxidatively degrading phenol in the drinking water. Nevertheless, this attempt does not stop phenol migration in shallow groundwater and surface water systems, as ozonation neither addresses the contamination sources nor degrades the contaminated plume. Instead, ozonation is just a passive point-of-use treatment for short-term risk reduction. As the phenol contamination appears to have expanded with time (Figures 2b and c), the number of households contaminated by phenol may increase as well. Obviously, passive, point-of- use phenol treatment alone is not a sustainable solution. Nong-Nea villagers need an effective, practical, sustainable remediation measure to reclaim their shallow groundwater and soil and to reduce the extent of the contamination. A remediation technique that allows community involvement will be of great benefit for Nong-Nea, which has an active environmentalist community.