There was a flood of sorts in San Anselmo over the weekend.

An aging 6-inch cast iron water main broke shortly after 4 p.m. Sunday on Belle Avenue near San Anselmo Avenue.

“The water was turned off shortly after 5 p.m. and we had a repair crew on site shortly thereafter,” said Libby Pischel, spokeswoman for the Marin Municipal Water District.

“The crew completed the repair at approximately 3:30 a.m. Monday morning and turned the water back on,” she said, adding that 17 customers were without water overnight.

The cause of the break was under investgation. The pipe was installed in 1940.

The district estimated that about 208,000 gallons of water spilled. There were no reports of property damage.