EPISODE · Jun 23, 2026 · 14 MIN
GWRS: Redefining Reuse and Refreshing Southern California's Future with Mehul Patel, OCWD
from The Executive Exchange · host Isle
In this episode of the Exec Exchange podcast, host Piers Clark speaks with Mehul Patel, Executive Director at Orange County Water District in Southern California, about the Groundwater Replenishment System (GWRS). Mehul explains OCWD’s role in managing the Orange County Groundwater Basin, which supplies 19 municipal agencies and serves 2.5 million people, and describes how OCWD partnered with Orange County Sanitation District to treat their secondary effluent using the full advanced treatment process of GWRS. The resulting purified water is injected to prevent seawater intrusion and spread in recharge basins to replenish groundwater. Mehul also highlights the major effort needed in public outreach to move the project forward.00:00 Welcome and Guest Intro00:33 Mehul’s Career Origin Story01:56 Mentorship and Taking Over02:39 What OCWD Does03:29 GWRS Overview and Treatment06:47 Scaling Up to Full Reuse08:34 Underground Travel Time09:48 Public Outreach and Acceptance11:29 What If GWRS Didn’t Happen12:16 Football Scarves and World Cup13:37 Advice to Younger Self14:32 Wrap Up and Sign Off
What this episode covers
In this episode of the Exec Exchange podcast, host Piers Clark speaks with Mehul Patel, Executive Director at Orange County Water District in Southern California, about the Groundwater Replenishment System (GWRS). Mehul explains OCWD’s role in managing the Orange County Groundwater Basin, which supplies 19 municipal agencies and serves 2.5 million people, and describes how OCWD partnered with Orange County Sanitation District to treat their secondary effluent using the full advanced treatment process of GWRS. The resulting purified water is injected to prevent seawater intrusion and spread in recharge basins to replenish groundwater. Mehul also highlights the major effort needed in public outreach to move the project forward.00:00 Welcome and Guest Intro00:33 Mehul’s Career Origin Story01:56 Mentorship and Taking Over02:39 What OCWD Does03:29 GWRS Overview and Treatment06:47 Scaling Up to Full Reuse08:34 Underground Travel Time09:48 Public Outreach and Acceptance11:29 What If GWRS Didn’t Happen12:16 Football Scarves and World Cup13:37 Advice to Younger Self14:32 Wrap Up and Sign Off
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GWRS: Redefining Reuse and Refreshing Southern California's Future with Mehul Patel, OCWD
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