Denzel managed this project for Castalia and had primary responsibility for advising the Ministry of Water and Environment and NWSC. His work included: clearly specifying the functional responsibilities of the AHA and the separate operating areas of NWSC; advising on changes to the system of Internally-Delegated Management Contracts (IDAMCs) currently used by NWSC, including how to broaden the use of private sector participation in the sector; reviewing of the current regulatory framework for the urban water and sanitation sub-sector, identifying gaps and overlaps and institutional responsibilities, and recommending measures to fill those gaps.