Abstract
The primary purpose of a water supply an sanitation project is to achieve an effective and sustainable imrovement of the community environment. This paper presents the experiences gained in the evaluation of a water supply and sanitation project in a settlement in Dhaka where improved water supply, sanitary latrines and hygiene education were provided by a reputed international non-governmental organization. Water and latrine use practices by adults improved but latrines were maintained so poorly that concentrated pollution created a problem within the community. The people from the community were not provided with appropriate knowledge or a system of maintenance. Even though water supply and sanitation were given priority status, since they were not planned with a view to being sustainable, they failed to interrupt the environmental contamination process.