The agency for constructing the plants will be the Kerala Water Authority (KWA). Once the plants are set up, sewage waste from households, offices and other establishments can be disposed of through pipelines specifically laid for it and treated at the plant. “We have initiated tender procedures for constructing two sewage plants. The plants will be a permanent solution to the problem of septic tank waste being dumped in various drains and water bodies in the city,’’ said Deputy Mayor C K Manisanker.

“We will be entrusting the construction of the plant to the KWA as it is the only agency with adequate expertise in the area,’’ he said. There is already a sewage plant run by the KWA at Elamkulam to cater to the needs of the central business district (CBD). But a large section of households and offices in the area are not using the facility. According to the residents in the area, the high rate charged for using the facility keeps them away.

According to Corporation and Health Department officials, one main reason for the mosquito menace in the city is leaking septic tanks. The sewage plant is expected to solve this problem.