Skip to content

Groundwater Replenishment System Virtual Tour Available

Join OCWD on a tour of the Groundwater Replenishment System (GWRS), the world's largest advanced water purification system for potable reuse. You'll see the plant up close and learn about the three treatment steps it takes to purify treated wastewater to drinking water standards. To view a technical virtual tour of the GWRS led by General Manager Mike Markus, visit: https://youtu.be/GjdPBqwZ2f4.

About the GWRS The GWRS takes treated wastewater from the Orange County Sanitation District and purifies it using a three-step process of microfiltration, reverse osmosis and ultraviolet light with hydrogen peroxide. The result is pure water that meets or exceeds all state and federal drinking water standards. The GWRS produces 100 million

gallons of water per day; enough water for 850,000 people. To learn more, visit www.ocwd.com/gwrs.

Scroll To Top