Half of Mumbai's sewage goes untreated into the sea, Comptroller and Auditor General nails BMC

Nearly 49 per cent of the sewage is outside the sewage collection system and is released without being treated, the CAG has said in its report on Local Bodies for the year ended March 31, 2016.

Published: 11th August 2017 06:23 PM  |   Last Updated: 11th August 2017 06:23 PM   |  A+A-

Image for representation only.

By Express News Service

MUMBAI: The Comptroller and Auditor General (CAG) has called out the Brihanmumbai Municipal Corporation (BMC) on its lackluster attitude towards collection and treatment of sewage.

Nearly 49 per cent of the sewage is outside the sewage collection system and is released without being treated, the CAG has said in its report on Local Bodies for the year ended March 31, 2016, which was tabled in both Houses of Maharashtra Legislature on Friday.

The report stated that Mumbai generated 2,146 million litres per day (MLD), of which only 1,098 MLD of sewage was being treated while the remaining 1,048 MLD (49 per cent) sewage was outside the sewage collection system and discharged into the sea/creeks without treatment.

"This combined with poor treatment of sewage at four of seven Waste Water Treatment Facilities (WWTF) was polluting the sea water. As a result, the Biochemical Oxygen Demand (BOD) level of the sea had increased (2011-13)," said the report.

This ranged between 10.9 mg/l and 13 mg/l against the desired level of 3 mg/l as per the Environment Protection Rules, 1986 and consent issued by the Maharashtra Pollution Control Board to the BMC.

"This was due to inadequate coverage of sewage network and low capacity utilization of treatment facilities," the report stated.

Sewer lines proposed under the master plan and feasibility works undertaken by the Sewage Project (SP) were executed to the extent of 43.06 per cent (49.81 kms out of 115.67 kms).

Similarly, only 17 per cent work of rehabilitation of old lines was executed and no improvement took place in WWTFs.

The rate analysis of composite items of works prepared by SP and Sewarage Operation (SO) was found faulty in many cases leading to excess/overpayment to the contractor.

Besides, the composite rates quoted by bidders were not properly analysed along with supporting documents before finalisation of the contracts. Instead, the department concerned negotiated with the lowest bidders on huge sums of money resulting in contracts at higher rates.

For slum rehabilitation, the BMC did not prepare comprehensive plans in coordination with the NGOs. The works executed did not meet the norms.

Of the total 477 work orders issued (between 2006 and 2015), 134 work orders were cancelled and ,5797 toilet streets were constructed leaving a deficit of 20,195 toilet seats as on March 2016.

"This defeated the objective of containing open defecation. The slow progress in construction of toilet blocks and connecting them to existing sewer lines resulted in continued discharge of untreated sewage into open nullahs/creeks/sea.

Stay up to date on all the latest Nation news with The New Indian Express App. Download now
(Get the news that matters from New Indian Express on WhatsApp. Click this link and hit 'Click to Subscribe'. Follow the instructions after that.)


Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the newindianexpress.com editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on newindianexpress.com are those of the comment writers alone. They do not represent the views or opinions of newindianexpress.com or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. newindianexpress.com reserves the right to take any or all comments down at any time.

flipboard facebook twitter whatsapp