The existing water supply facilities of Quezon are a crude mix of deep and shallow wells with some areas having developed spring catchments as reservoirs. The Poblacion area is being served by a Level III water system (areas with large water towers). It covers around the built-up areas of Alunan, Arellano, Samonte and San Juan. The Level III water system at the Poblacion was made possible through a development loan from the Development Bank of the Philippines and the World Bank. In the rural areas, there are manually installed shallow wells (pitcher, jetmatic, baby artesian) and deep wells. There are also four barangays that benefit from the development of spring catchments reservoir sourced at natural springs.