The mission of the City of Black Diamond Public Works Department is to efficiently plan, design, construct and maintain the City infrastructure to ensure and provide an efficient safe and reliable system of streets, public utilities and city facilities.

To view billing information, rates and other administration needs see the Utilities Clerk page
To view Public Works project information or to view information about Small Works Roster consideration, see the Capital Projects page
Fee Schedule

To report releases or spills such as paint, fuel or oil spills, illegal dumping, muddy water, or an unknown chemical being discharged into the City’s stormwater system and/or into lakes/streams, please call 9-1-1.

When reporting discharges and spills, you will need to leave (if known) the name(s) and address(es) of the owner and operator of the site, the location of the site (street address, and latitude/longitude if available); the hazardous substances released and their location (latitude/longitude if available); and your contact name and number (contact information will be kept confidential).



PRESS RELEASE... for information about the upcoming closure of SE 288th St., click here. Posted 3/18/20 (NEW)

Seth Boettcher,Public Works Director

Dan Dal Santo, Utilities Superintendent

Scott Hanis, Capital Project/Program Manager

City of Black Diamond
Public Works
24301 Roberts Drive
PO Box 599
Black Diamond, WA 98010
(360) 851-4446
publicworks@blackdiamondwa.gov

Construction Standards2009 Final Version

2020 APWA Standard Specifications

Notice of Intent for Construction Activity for filing with the Department of Ecology

Illicit Discharge/Spill Form

Right of Way Use Permit Application

Certificate of Liability Insurance Example

Right of Way Final Inspection

Storm Infiltration Systems

Sewer / Water Investigation

Standards Deviation

MPD Noise Control Hotline number: (425) 898-2107

Please note that all Public Notices are available to view on the Public Notice page.