One problem of food production in Indonesia, especially in urban areas is the limited area of agriculture. Hydroponics can be a solution to this problem. Hydroponics generally uses the AB-Mix nutritional formula, which is sometimes difficult to get. Alternative material that potential as a hydroponic nutrient source is residual rice washing water. RPTRA Pondok Kelapa Berseri is a community that can be recommended to vegetable production in urban area, especially in the Pondok Kelapa, East Jakarta. The results of the activity indicate that the use of rice water as a hydroponic medium has the potential to be developed even though additional concentrations of rice water still need to be done. Socialization and sharing experiences with the community were carried out on 50 participants around RPTRA and received good responses. RPTRA hopes that activities like this will be conducted periodically and synchronized with the PKK schedule at RPTRA Pondok Kelapa, so more people will get the benefits.