A boil-water advisory was issued Saturday afternoon for the residents of Port Allen until further notice.

The water has tested positive for E. coli, said Chief Administrative Officer Adrian Genre.

E. coli is a type of bacteria that normally inhabits the intestines of humans and animals, according to medical dictionaries, the ingestion of which through tainted food or water can cause diarrhea or vomiting.

Residents should boil their water for one minute before drinking, Genre said.

The city has taken more water samples and is hoping to get results by noon Sunday to determine its next steps, Genre said. It will rescind the boil advisory once the Louisiana Department of Health and Hospitals determines the water to be safe.

The advisory is in place for the estimated 5,100 residents of Port Allen, Genre said.