MWSS joins the 26th International Coastal Clean-up Celebration as MWSS staff and officials joined other agencies in cleaning up the Las Piñas-Parañaque Critical Habitat Eco-Tourism Area on 17 September 2011. This is in response to the invitation of the DENR to observe the 26th International Clean-up Celebration (ICC).

ICC is a global initiative to raise the profile of the marine debris concerns and dramatize the consequences on the continuing aggravation in both developed and developing countries. Launched in 1986 by the Ocean Conservancy, the ICC is held every third Saturday of September in over 100 countries.