Pune, July 2 PMC considering city company's membrane filtration plan to provide 50 lakh litres a day A project to procure potable water from Pashan lake is under active consideration of the Pune Municipal Corporation (PMC). Membrane Filters (India) Pvt Ltd, a Pune-based company working in the field of filtration systems, has approached the PMC with an offer to make the lake water potable by installing a membrane filtration system.