Strong economic growth with the rapid urbanization of cities has resulted in an exponential rise in drinking water demand and wastewater generation. The per capita wastewater generated by the class-I and class-II cities and towns, representing more than 70% of urban population in India, has been estimated to be around 98 lpcd, while for metro cities like Mumbai and Delhi, the rate is a staggering 220 lpcd. An alarmingly high 70% of the urban wastewater flows untreated into the river and sea.

Tackling the challenges of increasing urban waste water in India

Untreated discharges of wastewater from the cities into the surface water bodies have resulted in pollution of raw water source adversely impacting the water availability for human consumption, and consequences on the environment, aquatic life-forms, and ecology.

Urban wastewater management has, therefore, become a key concern for the city authorities. It is time to take concrete actions to create a sustainable model of growth and development in harmony with environment and ecology.


of sewage is generated from 35  metropolitan  cities (more  than  10  Lac  population)


of generated urban waste water flows untreated into rivers, lakes and marine water bodies

*Source: As per figures mentioned in reports published by CPCB 

Treating wastewater and encouraging its reuse

SUEZ is a specialist in water treatment that develops wastewater treatment solutions that are adapted to local conditions, meet health standards and protect water resources and biodiversity. As well as treating water, the plants designed by SUEZ also allow, where appropriate, for the reuse of wastewater, in keeping with the regulations applying to the environment and public health.
of sewage treated by SUEZ in India
of treated sewage is of Non-potable reusable quality
population equivalent served by SUEZ’s wastewater plants In India

In-house Expertise in 

  • managing a wide range of wastewater
  • treatment technologies to meet all kinds of treatment objective
  • designing and constructing energy robust & small footprint treatment facilities
  • sludge treatment for safe disposal/reuse/production of non-conventional energy.
  • plant odour treatment & mitigation
  • operation and maintenance preserving and prolonging the useful life of the assets.

Concern for 

  • health and safety, which is the essence of all our activities - from plant design & construction to operation and maintenance
  • ecology and the environment

Extensive O&M experience

  • managing variations in the wastewater quality
  • Optimizes the day-to-day performance of facilities
  • House-keeping

Technological cooperation creates value and differentiation

With our expertise in water treatment and experience acquired at numerous plants, SUEZ teams up with appropriate equipment manufacturers to develop and optimize new treatment solutions, new energy recovery systems and new sources of alternative energy.

In addition, by calling on partners to contribute on know-how outside our own areas of expertise, SUEZ has extended its scope, competitiveness, project delivery services and after sales for the long term benefit of our clients.

Dedicated specialist teams

Having experts in design, build, equipment and operation, SUEZ is able to draw on the particular skills of its employees for each project to create a response that meets the specific needs of its customers.

The commitment and motivation of the team enable SUEZ to deliver high performance, energy-efficient and reliable plants to our customers, within short timescales and at an optimal capital and operating cost, and to guarantee the quality of water required by the natural receiving environment or the objective for which the water is reused.

Delhi Jal Board
Bangalore Water Supply & Sewerage Board
Municipal Corporation of Greater Mumbai

Advanced wastewater treatment solutions

Each year, SUEZ invests €74 million in more than 65 research and development programs so that our customers benefit from the most efficient solutions and high-performance technologies on the market
Cyclor: activated sludge by sequencing batch reactor
Ultrafor: biological purification by hollow fiber ultrafiltration membranes
Densadeg lamellar settling sludge thickening