Secondary Permittees

The municipal stormwater permits generally cover cities and counties. However, there are other public entities (such as ports, prison complexes, parks and recreation districts, universities, or diking and drainage districts) that own or operate a stormwater sewer system located in a Phase I or Phase II city or county. These stormwater sewer systems are also known as municipal separate storm sewer systems (MS4). A public entity with an MS4 may be required to obtain a secondary municipal stormwater permit.

How do I determine if my district or facility needs a NDPES MS4 permit?

How do I apply for a NDPES MS4 permit?

There are three basic steps:

Complete the Notice of Intent (NOI). This is Appendix 5 of the permit. It contains the forms, instructions and sample public notice information. This form is for all entities seeking coverage under municipal stormwater permits.
Send the completed NOI to:
Department of Ecology
Water Quality Program
Municipal Stormwater Permits
P.O. Box 47696
Olympia, WA 98504-7696
Publish a notice at least once a week, for two consecutive weeks, in a single newspaper of general circulation in the county or city in which your district is located.

What do I do if I do not believe my district needs the NDPES MS4 permit?

If you do not believe the permit is appropriate for your MS4, then you do not need to take further action.

Secondary Permittees

How do I determine if my district or facility needs a NDPES MS4 permit?

How do I apply for a NDPES MS4 permit?

What do I do if I do not believe my district needs the NDPES MS4 permit?

Guidance for Secondary Permittees

Secondary Permittee Timeline Overview

Workshop Information

Annual Reports Guidance