Washington, DC underground utility map
See what's likely under any Washington, DC street: water mains, sewers, gas, electric and telecom lines, drawn in 3D from the city's own public records. Free, with no account.
Open the Washington, DC mapWhere the lines come from
Street permits show which utility dug on which block. Subsola reads DDOT’s Public Space Construction Permits (TOPS). Pepco, Washington Gas and Verizon don't publish where their lines run, so their gas, electric and telecom lines are placed on the blocks those permits name, at the depths the codes require. Each line on the map says how it was placed and how sure that is.
Where the city or a utility maps its own lines, they're drawn on those routes, from DC Water’s Water Main (16" & Larger). DC Water publishes only its largest water mains, 16 inches and up, and no sewers, so smaller water lines and sewers come from permits.
Lead service lines
DC Water's inventory gives the public and private side material for each premise, and counts only lead it has verified.
Before you dig, call 811
Subsola is research, not a utility locate. DC law requires a free locate request to Miss Utility four working days (96 hours) before digging, so the utilities can mark their lines on the ground.
Sources
- Public Space Construction Permits (TOPS)DDOT. DC Open Data, CC BY 4.0.
- Water Main (16" & Larger)DC Water. DC Water public map service; no open license stated.
- Water Service InformationDC Water. DC Water public map service; no open license stated.
The map also draws hydrants, inlets, street lights and signals, and streets and buildings, from the city's open data. Every card on the map names the record it came from.