“Water, Water, Everywhere: Advancing Water Security Through Improving Water Quality,” authored by DKI APCSS Professor Ethan Allen, explores the essential role of water quality technology in bolstering water security across the Indo-Pacific region. This piece highlights how advancements in decontamination technologies are vital to addressing water contamination, which is worsening due to climate change, population growth, and pollution. Professor Allen explains that many communities in the region rely on compromised water sources for domestic, agricultural, and industrial uses. The article reviews progress in filtration, heat, chemical treatments, and evaporation-re-condensation methods for removing various pollutants. Noteworthy innovations, such as atmospheric water generation and solar distillation, present adaptable and sustainable solutions to water scarcity.