If it is outside of regular city hall business hours, call (972) 727-8999 and press option 2. Leave a message including your telephone number and the exact address/location of the leak. The on-call person will call you back as soon as possible if you request for us to do so. For emergent water leaks, please call 911 or the Collin County Sherriff’s Department at (972) 547-5100. Please do not delay in reporting this type of issue.