A Honolulu police officer raises a caution tape blocking all but local access to Queen Street at Cummins Street. Photos by Richard Ambo, The Honolulu Advertiser   Water pools on Queen Street between Cummins Street and Ward Avenue. A police officer directs traffic in the background.

The Honolulu Board of Water Supply had provided a water wagon at 970 Queen St. for the affected water customers.

The break was reported at 6:15 this morning.

"We very rarely know what causes our breaks," said Su Shin, spokeswoman for the Board of Water Supply. Mainly it's because they're old."