Town officials say testing of water samples found no contaminants in the system.
Authorities say Christopher Gillum served as a police officer in Chapel Hill for 15 years and later held detention officer and deputy roles.
Questions remain about why Matthew Vukmer allegedly killed his housekeeper, Paula Floyd.
Matthew Vukmer is facing a first-degree murder charge in March 6 death of his housekeeper Paula Floyd.
Paula Floyd, who was found stabbed to death by the wife of suspect Matthew Vukmer, left a "legacy of goodness."
The Orange County Sheriff's Office said 53-year-old Matthew Jared Vukmer is facing a first-degree murder charge.