Carlton Ray

Vice President, Clean Rivers Project

Carlton Ray is the Director for the CSO Long Term Control Plan, recently renamed the Clean Rivers Project. Mr. Ray is responsible for implementing DC Water's 20-year, $2.6-billion federally mandated consent decree to control Combined Sewer Overflows (CSOs). The Clean Rivers Project includes the development and construction of water quality improvements including a system of large tunnels along the Anacostia River, Rock Creek and Potomac River which capture and convey combined sewage overflow for proper treatment at the Blue Plains Advanced Wastewater Treatment Facility. The 60+ person DC Clean Rivers technical staff consists of engineers with expertise in tunnels, large underground structures, hydraulics, environmental, water quality, QA/QC, geotechnical and tunnel safety expertise. The Clean Rivers team works under a very tight compliance schedule with significant penalties if designated milestones are not met.

Previously, Mr. Ray worked at the Department of Public Works in Indianapolis, Indiana as the Chief Engineer, Deputy Director and CSO program lead. In addition to his significant engineering duties specific to the advanced wastewater treatment facilities and sewer/storm infrastructure, he also led the engineering team that successfully developed and negotiated a $1.8 billion consent decree between the City of Indianapolis, the U.S. Environmental Protection Agency and the Indiana Department of Environmental Management to address CSOs. Mr. Ray successfully negotiated sanitary and MS4 NPDES permits and served as the contract compliance officer of one of the largest public/private sanitary treatment and collection system operations contracts in the world ($30+ million/annual) at Indianapolis.

Carlton Ray has more than 25 years of engineering and leadership experience in both public and private civil engineering sectors. Mr. Ray holds a Bachelor of Science degree in Civil Engineering from Auburn University.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

View of Mary at bottom of shaft inside tunnel shown from above
DC Water Launches Tunnel Boring Machine Mary, Marking Important Step for Potomac River Tunnel Project

First turn of cutterhead signals the start of excavation for the Potomac River Tunnel Project

In a defining moment for one of the District’s largest infrastructure investments, DC Water has marked its next major milestone in the Potomac River Tunnel Project. The first tunnel boring machine, Mary, has launched her northbound journey breaking through the soil to signal the start of excavation.

With the first turn of Mary’s drill-like cutterhead underground, the machine pushed forward to begin tunneling, representing the transition from years of planning and preparation to active tunnel construction on the $819 million project.

Latest Blog Post
A helicopter lowers a drill rig to workers on the Potomac River.
DC Water begins drilling in Potomac River to explore options to rehab underwater sewer line
When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
April 15, 2026
Wednesday, 9:30 AM

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 50% of the last 3 payments made. Eligible participants are residential customers who have had an outstanding balance for 60 days or greater and with an outstanding balance of $500 or more.