PITTSBURG -- About two dozen homes were without water for several hours Tuesday after a water main ruptured underneath a hilly street.

The break left 20 to 30 houses without water service in the area of Hillview Drive and Zion Avenue, according to Walter Pease, director of water utilities for the city of Pittsburg.

The 8-inch pipe is probably about 50 years old, Pease said; most pipes have a normal life of about 70 to 75 years, he added.

Workers shut down the pipe while repairs were made. Service was restored about 3 p.m., but crews remained on the scene for a while after making street repairs.

Bay City News Service contributed to this report. Contact Daniel M. Jimenez at djimenez@bayareanewsgroup.com. Follow him at Twitter.com/DMJreports.