As of 2011[update], eight transfer stations exist within the city for treating the waste.[168] Garbage is dumped in two dump-yards in the city—One in Kodungaiyur and another in Pallikaranai, with a major portion of the latter covering the Pallikaranai marshland.[169] In market areas, the conservancy work is done during the night.[170] Electricity is distributed by the Tamil Nadu Electricity Board.[171] Fire services are handled by the Tamil Nadu Fire and Rescue Services.[172] The city, along with the suburbs, has 33 operating fire stations.[173]