City Interventions

Chattogram Metropolitan Sewerage Project for North Kattoli Catchment

Country: Bangladesh
City: Chattogram

Key Stakeholders and PartnersChattogram Water and Sewerage Authority (CWASA); Agence Francaise de Developpement

Project Preparation Study PeriodOctober 2021 - February 2023

CDIA SupportUS$ 760,000

Expected Downstream FinancingAgence Francaise de Developpement (AFD) (tbc)

Infrastructure sectorsWastewater Management

CDIA priority impact areasClimate Change Mitigation and Adaptation; Environmental Improvement; Good Governance; Poverty Reduction

Key City Development Issues

Every day, 3 million residents of Chattogram, a major port on the Bay of Bengal and Bangladesh’s second largest city, either rely on on‑site sanitation facilities or flush their wastewater directly into the Karnaphuli River through a network of canals, severely impacting the city’s ecology and overall quality of life.

In response to this pressing need, the Chattogram government has created a master plan to bring the whole city under a sanitation system and has identified $1.3 billion worth of investments in wastewater collection and treatment over the next 40 years. Chattogram Water and Sewerage Authority (CWASA) has phased the investment and divided the area into six sewerage catchments, one of which is the focus of CDIA’s PPS support. The project is lined up for downstream AFD financing.

Details of Cooperation

CDIA’s support included a feasibility study, preliminary engineering designs, and public-private partnership/design‑build tender documents. A climate risk and vulnerability assessment was also  included, along with due diligence and
financial and economic analysis, all of which are necessary for future funding of project implementation.

Expected Development Outcomes

Upon implementation, the prevention of raw sewage from entering waterways is expected to improve the water quality of urban rivers and waterways. Poverty and inequality will also be addressed through the focus on poor households, which will immediately benefit from access to proper sewerage and reduce their exposure to harmful waste. Furthermore, CDIA’s institutional development roadmap for CWASA will particularly focus on the creation of an institutional structure for the wastewater sector, which CWASA currently lacks.

Overall, the sewerage system is expected to contribute to further development and increase the city’s standard of living, while also supporting the government’s goal of achieving sustainable development goal SDG 6.2.

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