The Regional Training Center was established in 1977 thru the assistance of the Local Water Utilities Administration. Most trainings programs and other capability building activities like seminars, including meetings were undertaken at the RTC. The amphitheatre-like training center can accommodate 30 participants. It is managed by a staff who is designated training director.

The RTC, which is now named Teodoro C. Araneta Training Center,  is located within the compound of the old reservoir.