The purpose of the Stormwater Utility is to protect the natural environment from the impacts of stormwater runoff by properly maintaining the City stormwater system and implementing the City’s stormwater management plan. 

Help Keep Black Diamond Clean

Here is what you can do to help keep stormwater clean and protect the environment:

Never pour oil, anti-freeze, or paint down or near a storm drain or on the ground.
Always recycle used motor oil. Dispose of household hazardous water properly.
Use natural fertilizers and pest control.
Use commercial car washes that are connected to a sanitary sewer and conserve water by recycling rinse water.
Protect shoreline habitat.
Plant trees and native plants.
Direct rain water appropriately so it can percolate into the soil.

The City of Black Diamond, in accordance with the Department of Ecology Phase II Stormwater Permit, has a 24-hour hotline for reporting discharges and spills.
24 Hour Hotline: (360) 886-2560

This hotline is for reporting releases or spills such as paint, small fuel or oil spills, illegal dumping and muddy water being discharged into the city's storm system.

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).

Thanks for doing your part to keep the
City of Black Diamond clean and beautifu!

NPDES Annual 2008 Report

Department of Ecology - Stormwater Manual
Volume I - Minimum Technical Requirements and Site Planning
Volume II - Construction Stormwater Pollution Prevention
Volume III - Hydrologic Analysis and Flow Control Design/BMPs
Volume IV - Source Control BMPs
Volume V - Runoff Treatment BMPs

Illicit Discharge and Spills Form

Stormwater Pollution Information

The City has hired PacWest Engineering firm to create the Comprehensive Stormwater Plan

Under Phase II requirement the City is mapping all storm drain structures, storm pipe locations and outfalls to water bodies.

The City of Black Diamond is working on new Development Standards.

Puget Sound Starts Here campaign is to educate and empower Puget Sound area residents regarding what they can do to keep pollution out of our local surface water resources, including lakes, rivers, streams and the marine waters of Puget Sound. The campaign will help residents better understnd that what flows into storm drains is generally untreated and winds up in local waterways.  See the links here for more information: Puget Sound Starts Here or YouTube. Puget Sound Starts Here Campaign- Press Release

For more information regarding stormwater and the NPDES Phase II Regulations visit the MRSC stormwater page or visit the Department of Ecology.

Monthly charge
Residential $11.50 per ERU
All others Based on impervious surface ÷ 3000 (exempting gravel)

Stormwater (effective January 1, 2010)
Stormwater rate will be billed per month to each parcel of real property within the City. The rate is based on service charges for the stormwater and surface water management utility. For property owners within the city limits, not receiving water and sewer service from the City, Stormwater will be billed monthly.