Water began pouring out of the older of two water tanks atop Bellevue Hill in West Roxbury on Sunday, but the MWRA says it was a minor mishap, not something more serious. A spokesperson says:
During routine filling of the tank, it overflowed a bit. The water was contained to the site and there were no operational impacts. Some electrical equipment got wet and was repaired.
The two tanks atop the hill, the highest natural point in Boston, provide water service and pressure to Roslindale, West Roxbury and several towns south of Boston.
The older, 114-foot-tall structure was constructed in 1914 and 1915 by the Metropolitan Water and Sewerage Board. It consists of a steel tank surrounded by a circular masonry wall.
Masonry wall being constructed around the tank in 1915 (source):