My water construction crew has spent 2 hours today trying to investigate this concern/complaint. We do not have a hydrant at this corner. We have listened using ultrasonic listening equipment and there are no water leaks from the pipe network in this neighborhood. Ponding water in the curb line is likely caused by a settled curb and should be reported to DPW for replacement. If you can furnish an address we would be glad to investigate further. I depressed curb will collect rain water or a sump pump discharge.