The Lab's "finished" water is produced with pride by the staff of BNL's Water Treatment Facility (WTF) of the Plant Engineering (PE) Division, using "federal public water system No. 511891." This is the only source on site of what is called potable drinking water for BNL's transient and resident population of approximately 3,500 people.

Drinking-water production is the role and responsibility of Water System Supervisor Tony Ross, who holds a New York State Department of Health (NYSDOH) grade IA certification. Ross is assisted by six water-treatment engineers, each having NYSDOH grade IIA certification. They are: Steve Barcelo, Tom Boucher, Jack Kulesa, Richard Lutz, Phil Pizzo, and Joe Tullo. Also on the WTF staff is Greg Stawski, who is an operator in training. WTF operations are overseen by William Chaloupka, PE Assistant Division Manager for Operations & Environment.

The flow of water through the Lab's treatment system and the on-the-job performance of the WTF staff are shown in this slide show of photos by Roger Stoutenburgh.