Efforts of CMWSSB to reduce Pollution in Chennai City Waterways
Efforts of CMWSSB to reduce Pollution in Chennai City Waterways is a presentation by Thiru G. Elangovan, Engineering Director of the Chennai Metropolitan Water Supply and Sewerage Board. It describes Chennai's sewerage system, pollution problems, treatment capacity and the Chennai City Rivers Conservation Project. It does not state any land use approval, property restriction or requirement for property owners.
Purpose and scope
Efforts of CMWSSB to reduce Pollution in Chennai City Waterways explains how the Chennai Metropolitan Water Supply and Sewerage Board sought to reduce untreated sewage entering Chennai's waterways. It describes the existing sewerage network, operational problems, treatment plants and projects intended to increase sewer and treatment capacity.
The presentation covers Chennai City and provides wider context about the Chennai Metropolitan Area. It states that the Chennai Metropolitan Area, excluding St. Thomas Mount cantonment, covers 1,189 square kilometres, while Chennai City covers 176 square kilometres. The Chennai Metropolitan Water Supply and Sewerage Board's operational area included Chennai City Corporation and parts of Ambattur municipal area and Manali New Town.
Sewerage system described
The Chennai City sewerage system is divided into five drainage zones with separate collection, conveyance, treatment and disposal facilities. The presentation reports:
- 2,663 kilometres of sewer mains and 515,560 house connections as of November 2009.
- 193 sewage pumping stations and nine treatment plants.
- Total treatment capacity of 486 million litres per day.
- Treatment facilities at Kodungaiyur, Villivakkam, Koyambedu, Nesapakkam and Perungudi.
The identified deficiencies include inadequate sewer carrying capacity, insufficient pumping and treatment capacity, heavy silting, frequent sewer obstructions and sewage overflows. The resulting problems include odour, mosquito breeding, public health concerns, groundwater pollution, environmental degradation and loss of visual amenity.
Chennai City Rivers Conservation Project
The Chennai City Rivers Conservation Project had two stated objectives, preventing pollution in Chennai City waterways and increasing the capacity of the sewerage system and treatment plants. Key works included:
- Interception and diversion works, including interceptors, gravity mains, manholes, pumping stations and pumping mains.
- Prevention of untreated sewage from reaching waterways.
- Expansion of treatment capacity at Perungudi, Koyambedu, Nesapakkam and Kodungaiyur.
- Desilting and removal of sand bars in the Cooum and Adyar rivers.
- Rehabilitation and resettlement of slum dwellers living along waterway banks.
- Storm water drainage works and project monitoring.
Relevance to property owners and buyers
The presentation provides infrastructure and environmental information rather than property rules. It may help readers understand sewer coverage, treatment facilities and pollution issues in different parts of Chennai. The supplied text does not grant development permission, change land use, impose a property charge or identify parcel-specific restrictions.
This summary is generated from the source document to help you find what is relevant. The PDF above is authoritative. For advice on your own property, use LandLens One or speak to a qualified professional.
Common questions
Does this presentation change the land use of any property?
No land use change is stated. The presentation describes sewerage infrastructure, waterway pollution and improvement projects.
Which parts of Chennai are covered by the five sewerage zones?
The zones include northern, central, western, south-western and southern parts of Chennai. Areas listed include Tondiarpet, Nungambakkam, Anna Nagar, Ashok Nagar, Mylapore, Adyar, Velachery and several surrounding localities.
What was the total sewage treatment capacity described?
The presentation states a total operating treatment capacity of 486 million litres per day across nine treatment plants.
Does the presentation identify problems that could affect neighbourhood conditions?
Yes. It identifies sewage overflow, odour, mosquito breeding, groundwater pollution, public health concerns and environmental degradation as problems associated with sewerage system deficiencies.
