Huge sinkhole on Chicago's South Side caused by water main break CHICAGO, Nov. 12 (UPI) -- Residents of a Chicago neighborhood were still advised to boil their water, two days after a break in a main caused a sinkhole that ate part of a street. Police said the break and the developing sinkhole were first reported late Sunday on the South Side at 124th Street and Wentworth Avenue, WMAQ-TV reported. Area residents said they discovered Monday morning the hole had grown significantly, with half the street collapsed, and many of them had basements full of water. "It's scary," said Deloris Alexander, whose house borders the sinkhole. It's really scary. The first thing that came to my mind is that everything would sink right in. Much of the area had no water for 24 hours. The Water Department distributed bottles. While taps began running again about 11 p.m. Monday, the department advised area residents to boil all water used for drinking and cooking.