This application is for Regular Membership: Individual MS4.
Regular Members are organizations that are subject to or hold a National Pollutant Discharge Elimination System (NPDES) stormwater permit. An Individual MS4 is a named traditional permittee in a Phase I or Phase II NPDES stormwater permit. Membership is tiered by population.
The following exclusion applies:
Airports and Ports: Employees of airports and ports are excluded from the Regular Membership Dues Category under the Individual MS4 and Areawide MS4 Program and must pay dues under the Transportation Entities, Airports, and Ports Membership Dues Category, unless the airport or port is itself a separate named permittee in a Phase I MS4 Permit and the port or airport is paying dues as part of an Areawide MS4 Program.
Please ensure all application information is accurate and complete, including organization name and membership contact. CASQA will review all applications prior to approval to confirm completeness and verify that the organization meets the eligibility requirements for this membership category.
Once approved, you will receive a confirmation email with next steps and payment instructions. No payment is needed at this time.
If you are unsure about the appropriate membership category, please review the membership categories and definitions on our Membership web page.
If you believe you have selected the incorrect membership application type, click here to return to the CASQA Membership Application page.