The original water system in Calabanga, Camarines Sur was constructed by Calabanga Rural Waterworks and Sanitation (CRWSS) in 1982. The construction was funded by the European Economic Community (EEC) and implemented by the Project Management Office-Bicol River Basin Development Program (PMO-BRBDP).
Calabanga Water District was formed on August 17, 1987 prior to the formal turnover by PMO-BRBDP by virtue of Resolution No. 44-87 enacted by the Sangguniang Bayan of Calabanga and in accordance with the provisions of Presidential Decree No. 198, otherwise known as the Provincial Water Utilities of 1973.
On August 24, 1987, the operation and management of the water system was turned over by the PMO-BRBDP to the Municipality of Calabanga specifically to the newly created CALABANGA WATER DISTRICT, categorized as small, an autonomous government corporation who operations were financed by its own resources such as water sales and other revenues.
After complying with the necessary requirements the Certificate of Conditional Conformance (CCC) No. 314 was awarded by the Local Water Utilities Administration (LWUA) on October 19, 1987. The actual operations and management of the water district had started in February 1988 under the stewardship of the first duly constituted Board of Directors consisting of five (5) members appointed by the Mayor of the LGU Calabanga, in conformity with the provision of P.D. No. 198.