Five groups of research teams from the Center for Environmental Research (PPLH) IPB University conducted monitoring of river water quality in DKI Jakarta Province, (16/8). The monitoring locations cover five administrative areas, namely East Jakarta, South Jakarta, West Jakarta, North Jakarta and Central Jakarta. These five areas are traversed by five watersheds, namely the Ciliwung watershed, the Sunter watershed, the Angke-Pesanggrahan watershed, the Cakung watershed, and the Sentiong watershed.