Puttenahalli Lake, situated in JP Nagar, South Bangalore, falls under the BBMP lakes division’s jurisdiction. Revitalised in 2009–2010, it is diligently maintained by the citizen group Puttenahalli Neighbourhood Lake Improvement Trust (PNLIT). The lake is supplied with treated wastewater from the sewage treatment plant of L&T South City. Additionally, it receives urban runoff during the monsoon season. This page is developed in collaboration with PNLIT. The citizen group can be reached at puttenahalli.lake@gmail.com.