COWD has undertaken different phases of improvement expansion projects.

In 1976, it started its Phase I improvements with the P32M loan form LWUA. This project was completed in 1978. It was responsible for the construction of the Macasandig Booster Pumping Station, Bugo Pumping Station and wells, and transmission lines. Such completion enabled COWD to provide water to the residents of Gusa, Cugman, Kauswagan, Bayabas, Bonbon, Patag and Bulua.

In 1983, COWD reached Balualang , Calaanan and Mandumol with the P95M-worth Phase II Improvement Project.

The third phase was initiated in 1996 . The said project was completed in 2005. This includes the drilling of 22 deep wells; construction of 12 pumping stations and 3 reservoirs; purchase of 17 standby power generators; lay out of 23-kilometer steel transmission pipes and 69-kilometer uPVC distribution pipes and installation of 26,000 service connections. The project will add 70,000 cubic meters to the daily water production and enable COWD to serve another 203,000 people or 46,200 households in Cagayan de Oro City and the nearby municipality of Opol .