State authorities say all water sources have been tested and deemed safe; some nearby residents say their drinking water smells like fuel and appears to have oil particles.
The service for Officer Pradeep Tamang takes place at 10 a.m. Saturday at 12Stone Church, Lawrenceville. Members of the community are invited to line the procession route.
The 25-year-old officer, who had been on the job less than a year, was fatally shot and another was critically injured responding to a fraud call at an Atlanta hotel.