INFRASTRUCTURE
The city is fully electrified by Kerala State Electricity Board (KSEB). The district is divided in to three circles: Transmission circle, Thiruvananthapuram city and Kattakkada. Domestic consumers account for 43% of the total power consumption, or 90 million units per month. Thiruvananthapuram district has one 220 kV, nine 110 kV and six 66 kV electrical substations. A 400 kV substation has just been commissioned by the Power Grid Corporation and will ensure high-quality power supply to the city.
The water supply schemes cover 100% within the city limits. It is 84% of the urban and 69% of the rural population, when the district is considered. Peppara and Aruvikkara dams are the main sources of water for distribution in the capital city. The new project plan for improving the water supply with Japan aid covers Thiruvananthapuram city and six suburban panchayats having urban characteristics.
The sewerage system in the city was implemented at the time of the Travancore Kingdom, and modernised in 1938. This scheme for the disposal of sullage and sewage is an underground system. The whole system is controlled by Kerala Water Authority now. The city area is divided in to seven blocks for the execution of the sewerage system, two commissioned in the 1990s and two after 2000. The sewerage is pumped to a stilling chamber at the Sewerage Treatment Plant (STP) located at Valiyathura, and is disposed through sewage farming. Diary Development Department maintains this sewage farm and fodder cultivation is done here. There is no revenue generation from this scheme, and the sewerage system in the city is a service provided to the residents