BURLINGTON, N.C. (AP) — A North Carolina city says its water customers should boil their drinking water until further notice because E.coli was found at a residence.

The City of Burlington announced the order and says it affects customers in Elon, Gibsonville, Whitsett, Haw River, Ossipee, parts of Greensboro and the Village of Alamance. Officials say E. coli bacteria was found Wednesday at an outdoor spigot at a residence.

City officials believe the discovery is an isolated incident. They anticipate resolving the problem within two days. Impacted residents are advised to use bottled water or boil all water they plan to use for drinking, making ice, brushing teeth, washing dishes or preparing food.