As part of our mission to provide superior water service at an excellent value, we supply safe drinking water to nearly one million Gwinnett County residents every day. The county’s source of water is Lake Lanier, a manmade reservoir created by Buford Dam on the Chattahoochee River.

Lake Lanier water is withdrawn from two separate intake facilities and pumped to our two award-winning water filter plants: the Lanier Filter Plant and the Shoal Creek Filter Plant.

Together, these two plants can produce more than 200 million gallons of clean water a day. We also maintain 10 water storage tanks throughout the county—holding more than 100 million gallons of water—ensuring plenty of water is always available for human consumption and firefighting.

Both of our filter plants protect public health and safety through a state-of-the-art treatment process called ozone biofiltration, and our state-certified staff monitors water quality around the clock. This means analyzing the water produced in our facilities nearly every minute of every day via computer monitoring and physically taking samples. We set our water quality goals higher than those required by state and federal regulations, and our water is consistently compliant with the Safe Drinking Water Act.

We protect public health in Gwinnett through access to clean water, constantly evaluate ways to improve our treatment processes, and monitor Lake Lanier to prepare for potential future changes in water quality, scarcity, or regulations.

Learn more about ozone biofiltration and the other ways we clean water before it gets to your tap.

Water Filtration Plants

Visit Water Outages  for information about planned and unplanned water outages.

Visit Construction to learn more about our current efforts to update and maintain our water, stormwater, and sewer systems.