The Comprehensive Investment & Master Plan for the water supply and sanitation sector issued by National Water Supply & Drainage Board (NWSDB) states that over 50% of Sri Lankans are provided with pipe-borne water. Given its extensive experience in the domain and its growing number of successful water projects, DIMO believes that there are ample opportunities to undertake water projects of any scale to help the government achieve its national development objectives. Today, DIMO is a highly reliable contractor that successfully executes total water projects on turnkey basis for the NWSDB by means of contributing to enhance the technology in the areas of water transmission, water treatment, water distribution, autonomation and many others. DIMO has tapped into its expertise while collaborating with principals such as KSB to provide the best energy efficient technology to get the desired outcome through low energy consumption. This has resulted in significant savings in terms of energy usage during the long-term operations of these water projects, thereby reducing the financial burden to the nation. Ambathale Energy Conservation project, the latest and the largest Energy Conservation project of NWSDB, is one of the examples for such ground-breaking initiatives.

DIMO has also been involved in executing many rural waters supply schemes executed by Water supply and Sanitation Improved Project (WASSIP) in Orubandiwewa, Galigamuwa, Kilinochchi, Nikawewa, Bulathkohupitiya, Hangliella and Maskeliya.