Click on the links below to find important information about Ohio’s Universal Marking Standards. You may print this information or attend an Ohio Damage Prevention Council or Utility Coordinating Council meeting in your area for copies of each item listed.
If you are an underground facility owner in the state of Ohio, and the code you use to identify your underground facilities is not listed, please provide that code to OHIO811 by emailing us at email@example.com.
Once provided, your company code will be posted, and workers in your area will know it is your facility they are excavating near.
Excavators, print this list and keep it handy. It is your key to underground facility owner identification. This list is updated often, so check back frequently.