How do I determine if my district or facility needs a
The following questions will help you to determine whether your facility or
district needs a permit.
- Is the district or facility a public entity?
Secondary permittees must be a public entity such as a sewer district,
flood control district, port, public university or college, prison
complex, drainage district, or parks and recreation district.
- Does the facility or district own or operate a municipal separate
storm sewer system (MS4)?
A municipal separate storm sewer system is a conveyance, or system of
conveyances, that includes roads with drainage systems, municipal
streets, catch basins, curbs, gutters, ditches, man-made channels, or
storm drains that is:
Storm sewers in very discrete areas, such as individual buildings, do not
require permit coverage.
- Owned or operated by a public entity such as a city, town,
county, or special purpose district established by the state
- Designed or used for collecting and
- NOT a combined sewer, and
- NOT part of a Publicly Owned Treatment Works.
- Is the district or facility located in an area covered by the
The permit requirements apply to limited geographic areas in Washington.
The permits cover the following geographic area(s):
- The Western Washington Phase I Permit includes the entire unincorporated
area of Clark, King, Pierce, and Snohomish counties and the cities of
Seattle and Tacoma.
- The Phase II Permits only apply in Washington's “urbanized areas”
defined by the 2000 Census. Click here for maps of these areas. The
lists below also give the Phase II cities and counties.
- The Western Washington Phase II Permit applies to portions of Cowlitz,
Kitsap, Skagit, Thurston, and Whatcom counties. Please click
here for a list of the
counties, cities, and towns
covered by the Phase II permit.
Eastern Washington Phase II Permit applies to portions of Asotin, ,
Chelan, Douglas, Franklin, Spokane, Walla Walla, and Yakima counties.
here for a
list of the counties, cities, and towns covered by the Phase II permit.
If you answered YES to the above questions, your district/facility may need
a stormwater general permit as a secondary permittee. In order to get a
permit, you must apply for coverage. However, some districts may be eligible
for a waiver.
- Can I get a waiver?
You may be eligible for a waiver
from the permit requirement if your municipal separate storm
sewer system (MS4):
This waiver does not apply to districts or facilities located entirely or
partially in Phase I jurisdictions: Snohomish, King, Pierce and Clark
Counties and the Cities of Tacoma and Seattle.
- is located in a Phase II jurisdiction and
- serves fewer than 1,000 people, including both resident and
- Who can I contact about my district/facility?
Please see the
Contact Information page to find out who
to talk to about your district/facility.
Also, see EPA's Fact Sheets on Phase II coverage:
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