The Department of Environment and Natural Resources (DENR) has named three more river systems as water quality management areas (WQMAs), bringing to 37 the total number of water bodies under policies for protection. In three separate administrative orders signed by Environment Secretary Roy Cimatu, the Malabon-Tullahan-Tinajeros and the Las Piñas-Parañaque river systems in the National Capital Region, and the Iyam-Dumacaa river system in Region 4A (Calabarzon) have been designated as WQMAs. The move aims to protect and improve the water quality of the three river systems pursuant to Republic Act (RA) 9275 or the Philippine Clean Water Act of 2004.

Villanueva, R. (2018, August 5). DENR names 3 more protected river systems. The Philippine Star, p. 7.