Puttenahalli lake was one of Bengaluru's pristine lakes. However, pollution and neglect turned it into a cesspool of garbage and sewage. PNLIT, a citizen's group then took the responsibility of conserving and revitalizing the lake. The primary mode of funding for the lake is through donations from local residents. Since then, PNLIT has organized many social events in conjunction with other similar bodies to promote the welfare of the lake and its flora and fauna.