Power services in the town are provided by the Manila Electric Company, Inc. (MERALCO), except in the mountain barangay of Pintong Bukawe. There were 23,189 customers in San Mateo as of March 1999. Of these, 27,115 or 95.37 percent residential customers while commercial, industrial and streetlights number 971 (4.19 percent), 36 (0.15 percent), and 67 (0.29 percent), respectively. The municipality of San Mateo had a total demand of 55,355 megawatt-hours in 1998.

The municipality of San Mateo is in the immediate vicinity of Marikina, Montalban, and Quezon City. The electric power of the entire municipality of San Mateo comes from the 133 MVA Transformer Bank No. 1 of Marikina sub-station. The Marikina 115 KV-34.5 KV sub-station also serves the power demand of Marikina, Montalban and portions of Quezon City. This power sub-station is located along Katipunan Avenue corner Aurora Boulevard, Quezon City.

The main source of the municipality’s water supply is the surface water coming from La Mesa Dam other sources are  open wells, springs and other ground water resources.