Bureau of Utilities - Water & Sewer Location Office

Location : 8270 Old Montgomery Rd.
Hours : Mon-Fri, 7:30 a.m. to 4:00 p.m.
Phone : 410-313-4900 - Fax : 410-313-4989

After Hours Emergencies : 410-313-2929

                             Call Miss Utility before you Dig! 

As a member of Maryland's "One Call Concept" system ( or "Miss Utility" ) Howard County receives more than 100 daily requests from excavators to locate and mark public water and sewer lines.

Please call "Miss Utility" at 1-800-257-7777, or 811, at least 48 hours prior to work, to have all utilities located. ( BGE, Verizon, Comcast, etc. )

Blue paint = Water lines - Green paint = Sewer lines

See below for corresponding marking color codes for all utilities.

Note to Homeowners :

Howard County does not locate or mark your private water and sewer lines. We have no information or maps indicating specifically where the plumber installed your private water and sewer lines. We only mark up to your property line, which usually means your water meter ( or ball valve ) and the sewer cleanout that is usually located along your property line.

Anything beyond that point and your house, including your sewer cleanout, is considered your private water and sewer lines and are your responsibility to maintain and have located, if needed.

However, some things to keep in mind :

By code, the plumber should have installed your water and sewer lines at least 36" deep. That is the "frost line" for this area, to prevent freezing in winter. If you're digging 18