Cambodia: Cambodia’s Tonle Sap shows what’s at stake in the Mekong’s dam-fueled decline; Wastewater treatment plant in Southern Phnom Penh to be built in late April; Indonesia: Jakarta's river troops remove 436 cubic meters of garbage; Lao PDR: Laos issues new decree on dams; Malaysia: Air Selangor to employ retention ponds as fallback against pollution-related disruptions; Myanmar: Water problems draining the pockets of Yangonites; Philippines: Congress should pass ‘Dept of Water’ bill; Thailand: PWA well-prepared for drought scenarios; Viet Nam: HCM City's major environment and sanitation project face slow progress; Singapore: S'pore's fourth desalination plant, which can treat both sea and reservoir water, officially opens; and more stories are provided.