(AP) — Bacteria linked to Legionnaires disease have been found in the water system at the Department of Veterans Affairs facility in Grand Island.

The VA is working with the city and environmental testing labs to find the source of the Legionella bacteria, the strain and the proper course of treatment.

Officials say no cases of Legionnaires’ disease, a form of pneumonia caused by some strains of Legionella, have been reported at the facility.

About half the Legionella strains do not cause disease.

A VA website says the Grand Island facility includes a community living center, a residential substance abuse unit and an outpatient clinic.