MWSS participates in the Kapit Bisig Para sa Ilog Pasig Fun Run on 20 November 2011. The event was aimed at creating further awareness on the rehabilitation and cleaning of the Pasig River. The MWSS contingent of some 15 employees joined 86,000 runners in the fun run which covered a total of 21km in Metro Manila divided into segments of shorter routes that ended at SM MOA in Pasay.