The project was identified, undertaken and completed by staff at BSP Haus Branch at Harbour City. In the three-week project, staff assisted with cleaning the site, setting up the foundation, cementing and the installation of the tanks.
The tanks and material were transported from Port Moresby to the school, which is south of the capital city on the Magi Highway.
Mt Diamond principal Martin Sepes said that the school previously had just two tanks to serve the school stated as well as surrounding communities and the Seventh Day Adventist Church.
"With the two additional tanks installed, it will be sufficient enough to serve everyone. We sincerely thank BSP for this initiative and contribution to the school," he said.
BSP's National Capital District area manager Standerd Wai said the tanks represented a token of BSP's commitment to assisting the community through such projects.