Iowa law states that if you are excavating, including digging, you must call Iowa One Call at least 48 hours in advance to minimize the risk of damaging any underground facilities (electric, gas, communications/television, water, and sewer). Saturdays, Sundays and legal holidays do not count toward the required 48-hour notice. The one-call system provides two easy ways to obtain locating and marking of underground facilities. It’s fast, it’s free, it’s the law.


The national 811 three-digit dialing system allows easy access to Iowa One Call. You can simply dial 811 to be connected to a live person at the call center. (If you are near the Iowa border or out of the state, dial 1-800-292-8989). During this five-minute phone call, the call center representative will gather information about your excavation that will be transmitted to the facility operator and locators. 

You may also create a ticket on our website. Generating a ticket online allows you to create precise drawings and descriptions of your proposed excavation. The NextGen system offers detailed mapping tools to easily communicate the extent of your project with the locators.

From the time the notice is transmitted, the facility operators have 48 hours (excluding Saturdays, Sundays and holidays) to locate their infrastructure with spray paint and flags. Note: Iowa One Call is neither a utility nor a locating service. Iowa One Call owns no facilities and does not locate underground facilities.

The Iowa One Call system processes over 540,000 tickets and coordinates more than 2.7 million locate requests per year in communities throughout Iowa. 


Quick Facts About Iowa One Call:

  • Iowa One Call was started as a voluntary service in 2980 by Northwestern Bell (now CenturyLink) and Iowa-Illinois Gas & Electric (now MidAmerican Energy Company) to maintain the integrity of their utility systems.

  • Since January 1, 1993, all owners and operators of underground facilities are required by Iowa state law to participate in Iowa One Call. There are over 1,500 members in the state.

  • Requests can be made by phone or online. Simply dial 811 (or 1-800-292-8989) or create a ticket at iowaonecall.com. Both services are free of charge. The cost is paid in full by participating underground facility operators.

  • Iowa One Call’s Board of Directors is elected by operators, excavators, and other persons who participate in the notification center. Directors do not receive compensation for serving on the Board.

  • An annual report of Iowa One Call is filed with the Iowa Utilities Board and is available for review.

  • Iowa One Call is neither a utility nor a locating service. Iowa One Call owns no facilities and does not locate underground facilities. 


Contact the Iowa One Call Notification Center by dialing 811, or file your tickets online:

Excavators       Homeowners


Phone: 1 (800) 292 - 8989



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