Emergency Water Outage
Apr 02, 2026 | 06:30 PM

Emergency Water Outage
Apr 02, 2026 | 05:30 PM

DC Water part of Water Research Foundation Team Awarded $1 million Grant by EPA for Exciting New Wastewater Innovation

October 19, 2020

DC Water announced today that it is partnering with Water Research Foundation, Hampton Roads Sanitation District and several universities on groundbreaking new research that will save customers money and could improve water quality.

The goal is improved wastewater treatment and DC Water’s concept for improving the technology has the potential to save millions for cities around the world, said Chief Executive Officer and General Manager David L. Gadis.

“Our goal is to reduce energy and chemical use and save our customers money while using innovative technology to improve the environment,” explained Mr. Gadis, while praising the partnership with Water Research Foundation, Hampton Roads Sanitation District, George Washington University, Northwestern University and Columbia University.

The U.S. Environmental Protection Agency awarded the collaboration team its ‘Science to Achieve Results grant’ with a three-year timeframe for achieving results. At DC Water, the project is led by Haydee De Clippeleir, the research program manager and Christine deBarbadillo, the director of clean water quality and technology.

deBarbadillo said the Authority has worked closely with all members of this collaboration team for many years exploring solutions and upgrades to existing wastewater treatment processes. Removing nitrogen is a critical element in DC Water’s requirement to clean wastewater to the highest possible level before discharging it back into the Potomac River, where it leads to the Bay.

Discharge of excess nitrogen and phosphorus can lead to algal blooms in surface waters. When that happens, the health of marine life, from fish to crabs to dolphins, is jeopardized.

The typical treatment methods used at water resource recovery facilities to eliminate nitrogen rely on addition of readily degradable organic chemicals such as methanol as well as consuming a tremendous amount of electricity.

“We are using a different pathway into the nitrogen cycle to more efficiently remove nitrogen from wastewater and reduce energy and chemical costs,” deBarbadillo said.

Latest News

Excavators in the canal digging up soil and another excavator removing the soil to a dump truck to be hauled away

DC Water and its contractor have made significant progress on soil removal, reaching the clay liner between locks 13 and 14 of the C & O Canal, which was used as a bypass for wastewater during the Potomac Interceptor repairs.

Work continues to remove sludge between locks 10 and 13, which is expected to be completed by mid- to late-April. The soil will then be removed down to the clay liner as the final step, and the canal reconstructed to meet National Park Service specifications.

Soil Removal Underway with Excavator in Canal

Today, DC Water and its contractors began removing contaminated soil between locks 13 and 14 in the C & O Canal, which was used as a temporary bypass during the Potomac Interceptor repair effort. Clean-up efforts are ongoing at Lock 10 with work to remove sludge now getting underway between locks 11 and 13.

Aerial shot of Blue Plains Advanced Wastewater Treatement Plant

Series 2026 Bond Transaction Delivers Significant Long-Term Cost Savings

DC Water has closed on a refinancing deal for its Series 2026 bonds that will save customers millions of dollars and keep rates affordable across the District. The refinancing transaction, which closed this month, delivers approximately $54 million in budget savings over the next twenty years, directly benefiting DC ratepayers through reduced costs.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Map of lane closure
Traffic Advisory: Rock Creek and Potomac Parkway NW Lane Closure Beginning Jan 19

Beginning on or about January 19, 2026, weather permitting, DC Water will implement a temporary lane closure on Rock Creek and Potomac Parkway NW b

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 7, 2026
Tuesday, 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.