Beta
Chicago underground utility map
See what's likely under any Chicago 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 Chicago mapBeta. Chicago publishes no water, sewer or other pipe maps and no hydrants or catch basins, so every line is placed from street opening permits alone.
Where the lines come from
Street permits show which utility dug on which block. Subsola reads Chicago Department of Transportation’s Transportation Department Permits (public way openings). Peoples Gas, ComEd, AT&T and Comcast 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.
Chicago publishes no water main, sewer, gas or electric maps, and no hydrants or catch basins, so every line here is placed from street opening permits.
Lead service lines
The Department of Water Management lets people look up one address at a time at leadsafechicago.org but publishes no inventory, so the map shows none.
Before you dig, call 811
Subsola is research, not a utility locate. Illinois law requires a free locate request to Chicago 811 (DIGGER) two business days before digging, so the utilities can mark their lines on the ground.
Sources
- Transportation Department Permits (public way openings)Chicago Department of Transportation. City of Chicago data portal terms of use; provided as is.
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.