India, April 16 -- The recent fish deaths at Pashan Lake were caused by a combination of factors - including excess sewage inflow, limitations of a small-capacity treatment plant, and environmental conditions - according to a detailed report submitted by Primove Consultancy on Wednesday.

The findings follow a show-cause notice issued by Pune municipal commissioner Naval Kishore Ram to the consultancy regarding the functioning of the sewage treatment plant (STP) near the lake.

Existing infra not adequate

According to the report, the STP at Bavdhan, built using Integrated Fixed-Film Activated Sludge (IFAS) technology, was designed to treat only 1 million litres per day (MLD). However, nearly 10 MLD of untreated sewage from Bavdhan and Bh...