Welcome to Bluewater Health Our organization is located in Ontario within the Erie St. Clair Local Health Integration Network and encompasses Bluewater Health located in Sarnia, and Charlotte Eleanor Englehart Hospital of Bluewater Health located in Petrolia. Our staff, physicians and volunteers number nearly 2,500, making us Sarnia-Lambton’s largest public employer. We take great pride in our legacy of patient care, quality and service, and it is upon these strong foundations that we deliver on our mission, vision and values.