EPA estimate includes costs for wastewater treatment and collection systems, combined sewer overflow control, and stormwater management.
Following a 27-day closure, DC Water will reopen a section of Piney Branch Parkway between Arkansas Avenue and Beach Drive NW early Monday morning, restoring an important cross-town connection for thousands of District commuters. During the closure, a section of the road was temporarily relocated for construction of DC Water’s Piney Branch Tunnel Project.
** Advisory is Lifted as of 9:00 P.M., June 6, 2026**
DC Water has lifted the precautionary Boil Water Advisory for parts of Upper Northwest DC after testing confirmed the water is safe to drink. All customers in the impacted area may use tap water for all purposes after following the instructions provided below.
Impacted neighborhoods include areas of Chevy Chase DC, Friendship Heights, Tenleytown, AU Park, Spring Valley, Cleveland Park, Woodley Park, Van Ness, Glover Park, Wesley Heights, and Cathedral Heights
The District of Columbia Water and Sewer Authority (DC Water) issued a Boil Water Advisory today for some customers in Northwest DC that experienced a loss of water pressure on Friday, June 5, 2026, impacting 4,970 customers.
