DC Water's largest planned capital solicitation, the M Street Corridor Transmission Mains Replacement and Rehabilitation, is valued at US$120M–US$130M and is to be let as a progressive design-build contract, according to its Capital Projects Forecast of October 2, 2026.
A first, then a second
In May 2026 PCL Construction announced a US$146 million progressive design-build contract with DC Water, which it described as the utility's first. The job covers two potable water pumping stations, two storage reservoirs and the Anacostia 3rd High Pressure Zone, with substantial completion expected in March 2031. The M Street project would follow the same model: CFRP lining, replacement, leak repairs and valves on large-diameter mains.
Construction managers at risk
Two other forecast items use construction manager at risk. Water Interconnections and Booster Pump Station Upgrades is valued at US$22M–US$26M over 5 years. The first Potomac Interceptor task order under a CMAR master agreement covers about 17,000 feet of 66–72-inch pipe in Fairfax County, inside a US$625 million ten-year rehabilitation program.
Where the tunnels went
The biggest award remains the US$819 million Potomac River Tunnel, a design-build contract held by a CBNA–Halmar joint venture since 2023, with completion due in 2030.
The budget behind it
DC Water's FY 2027 capital budget is US$1,072.3 million, 38.0% above the revised FY 2026 budget of US$776.8 million.
Which forecast items suit which suppliers, how DC Water's master agreements work and what to watch through 2027 are covered in the full report. The full report, DC Water: Utility Account Brief, is available for USD 499. For a free overview, read the DC Water Utility Snapshot.