Why are there blue or green marks and/or flags in my yard?

These markings mean a utility locate request has been called in for construction work that will be done on or near your property. Blue lines and flags indicate there is a buried water main or service in that area, while green lines and flags indicated buried sewer lines. Any time someone needs to make an excavation, they are required by the State’s NC811 law to make a request for all buried utilities to be located and marked prior to the performing the work. Requests may be made by calling 811, entering the information at the NC811 website or with their downloadable mobile application. This is a free service. Additional information on NC811 regulations and contacts for companies that perform locates on private lines may be found at NC811.org.

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1. What is backflow?
2. How does ONWASA protect the public water system against Backflow contamination?
3. Why do I have to install a blackflow assembly if my neighbors do not have them?
4. How can I tell if water/sewer service is available to my property?
5. If I don't have direct access to a water or sewer main, will ONWASA extend a water and/or sewer main to my property?
6. Why are there blue or green marks and/or flags in my yard?