Changes source, adds details

July 15 (Reuters) - Four contract workers were injured after a fire at Chevron's CVX.N 356,440 barrels-per-day (bpd) Pascagoula, Mississippi refinery on Monday, the company said in an email statement.

An incident at the refinery’s wastewater treatment area led to the fire, a Chevron spokesperson said.

The spokesperson added that the fire was extinguished quickly and three of the injured were transported to a local hospital for further treatment.

"The cause of the incident is being investigated," the company said.

(Reporting by Noel John, Ashitha Shivaprasad and Sherin Elizabeth Varghese in Bengaluru, Editing by Franklin Paul)

((Ashitha.Shivaprasad@thomsonreuters.com;))