India, Feb. 6 -- PUNE The Pune Municipal Corporation (PMC) will soon form standard operating procedures (SOPs) for reverse osmosis (RO) plants across the city, officials said on Wednesday.

PMC, on Tuesday, sealed as many as 19 RO plants, considered a primary source of safe drinking water for thousands living in the GBS-affected areas. All these RO water samples, collected from jars and containers in GBS-affected areas, tested positive for Coliform bacteria, including E coli.

RO water is sold in pet jars and is in great demand in households, shops, eateries, marriage halls, lawns, and hotels, amongst others.

Prithviraj BP, additional municipal commissioner, said, "There is a need to have a safety and quality check of the water supplied ...