Plan Ahead: Call 811 or Contact Iowa One Call Before You Dig
To avoid a potential accident caused by excavation, have the location of all underground utility lines marked before excavating by hand or with equipment. To comply with Iowa Code chapter 480, Underground Facilities Information and begin the locating and marking process, a person must contact Iowa One Call at 811 or 800.292.8989 a minimum of two days (excluding Saturday, Sunday and legal holidays) before excavation commences. Iowa One Call is a free service.
One Call Underground Locate Service, Damage Prevention, One Call Complaints and Violation Enforcement by the Attorney General
Many different kinds of utility services may be buried in the ground on your property. For your safety, Iowa law requires that you always call 800.292.8989 a minimum of two days (excluding Saturday, Sunday and legal holidays) in advance to schedule underground utility lines to be located and marked before initiating any digging or excavating project. Visit this web page for more information about damage prevention and Iowa One Call. The Office of the Attorney General enforces the One Call Law.
Learn how to file a One Call Complaint using the Attorney General's online complaint form and see more information on One Call Law enforcement through the Attorney General's Office.
DAMAGE PREVENTION VIDEO: Review the Iowa One Call Damage Prevention video by the Iowa Utilities Board and Iowa Attorney General's Office.
Be safe and always call 811 before any digging project. The call is free and Iowa law requires everyone to locate underground utilities before digging. If an underground utility line is hit while digging, it can cause serious injuries, disrupt service to entire neighborhoods, and potentially result in fines and repair costs.
After Iowa One Call is contacted, the following will happen.
- Operators with underground facilities in the area where the excavation is planned are notified. This includes natural gas and power utilities, communications companies, and cities and towns.
- Within 48 hours after being contacted, utilities either mark their underground facilities with color-coded paint marks or flags, or notify Iowa One Call it has no lines in the area.
If a contractor is performing the excavation work, a person should make sure that the contractor calls Iowa One Call two days (excluding Saturday, Sunday and legal holidays) prior to the commencement of excavating.
In the United States, the American Public Works Association (APWA) Uniform Color Codes for temporary marking of underground utilities are listed below:
|RED||electric power lines, cables, conduit, and lighting cables|
|ORANGE||telecommunication, alarm or signal lines, cables, or conduit|
|YELLOW||natural gas, oil, steam, petroleum, or other gaseous or flammable material|
|GREEN||sewers and drain lines|
|PURPLE||reclaimed water, irrigation, and slurry lines|
|WHITE||proposed excavation limits or route|
|PINK||temporary survey markings, unknown/unidentified facilities|
Damage Prevention and One Call Contact Information
Safety and Engineering Section
Iowa Utilities Board
Media Inquiries Contact Information
Director of Communications, Iowa Utilities Board