Categories & Dues

IMPORTANT NOTE - For initiating membership in 2023 please refer to the dues schedule here:


CASQA is a great resource for any professional in the stormwater or water quality field. Please log in if you have a CASQA account and wish to purchase a membership, check your membership expiration date, or renew an existing membership. If you do not have a CASQA account and wish to become a member, you can purchase your membership below.

Note: CASQA membership does not include a subscription to the BMP Online Handbooks (including the SWPPP templates). However, CASQA members receive reduced rates for BMP Online Handbook subscriptions.

General Information

Member Benefits and Multi-Year Dues Schedule 

Group CASQA Memberships

  • Group CASQA memberships have a designated primary member (purchaser) who can share the membership with others (sub-members). Adding sub-members is the responsibility of the primary member and is a one time step unless someone leaves or joins the organization.
  • Click here for instructions to add sub-members.

Membership Level Change

Has your city population or business revenue grown your organization into the next membership level? Contact us for help adjusting your membership level.

Payment Options

Credit card is the only payment option. We do not accept check payments unless by special request and approved by CASQA.

If you need a pre-purchase invoice you can select the Pre-Sale Invoice tab on your CASQA account page to create one or click here.

Regular Members

NPDES stormwater permit holders: Construction General Permit, Industrial General Permit, MS4 Permits: Phase I or Phase II (Small MS4) - Traditional or Non-Traditional

  • Note: Non-Traditional Phase II refers to Federal and State operated facilities such as universities, prisons, hospitals, military bases.
  • Population based on most recent estimate of California Department of Finance
  • GR: Gross California revenue

2023 MEMBERSHIP FEES

Individual Memberships (Phase I or II MS4s joining individually)

$440 Pop. less than 25,000  Buy now

$900Pop. 25,000-49,999  Buy now

$1,815Pop. 50,000-99,999  Buy now

$4,480Pop. 100,000-249,999  Buy now

$8,980Pop. 250,000-499,999  Buy now

$13,460Pop. 500,000-999,999  Buy now

$16,460Pop. 1,000,000-1,999,999  Buy now

Areawide Memberships (MS4s joining collectively)

$4,480Pop. less than 250,000  Buy now

$8,980Pop. 250,000-499,999  Buy now

$11,220Pop. 500,000-624,999  Buy now

$13,460Pop. 625,000-749,999  Buy now

$15,710Pop. 750,000-999,999  Buy now

$18,700Pop. 1,000,000-1,499,999  Buy now

$25,450Pop. 1,500,000-1,999,999  Buy now

$31,440Pop. 2,000,000-3,999,999  Buy now

Construction or Industrial Permittees

$750 Small: GR < $5 Million  Buy now 

$2,990 Medium: GR $5-$10 Million    Buy now

$4,480 Large: GR > $10 Million  Buy now 

Local, State, Federal, Institutional Entities (Other Permittees*)

*Categories for other permittees not otherwise listed above.

$4,190 NPDES Permitted Entity  Buy now

$860 Non-Traditional Phase II  Buy now

Affiliate Members

Do not hold a NPDES stormwater permit

  • GR: Gross California revenue
  • Membership benefits for trade associations and non-profit interest groups shall be limited to direct employees or may be assigned to non-employees up to the maximum number of contacts for each code

2023 MEMBERSHIP FEES

Individuals (1-person membership: Professionals and non-professionals joining individually rather than via their organizations)

Professionals and non-professionals joining individually rather than via their organizations.

$240 Individual  Buy now

Consultants, Vendors, Sole Proprietors, Trade Associations, Non-Profit Interest Groups, Others

$360 Very small: GR < $500K  Buy now

$825 Small: GR < $1 Million  Buy now

$1,880 Medium: GR $1-5 Million  Buy now

$3,970 Large: GR > $5 Million  Buy now

Local, State, Federal, Institutional Entities

$3,140 Non-NPDES Permitted Entity  Buy now

Steps to Renew Your CASQA Membership

IMPORTANT: If not renewed by 11:59 PM Pacific time on the day before the expiration date, access to your CASQA member benefits will be denied. For those with group memberships access will also be denied for your sub-members. Member benefits include the Bi-Weekly Update, Water Quality NewsFlash, member library, member forum, and member discounts to products and events.

  1. If necessary, please upgrade to Internet Explorer 10+ or use another browser such as Firefox or Chrome. The CASQA website does not support Internet Explorer 8 or 9.
  2. Renewals must be done through the account of the primary member.  Log in to your CASQA account page.
  3. Select the Orders tab and look for the membership item that needs to be renewed; click 'renew'. There is no penalty for early renewal. Upon renewal, 12 months will be added to the original expiration date.

If you need a pre-purchase invoice you can select the Pre-Purchase Invoice tab on your CASQA account page to create one or click here.

Credit card is the only payment option. We do not accept check payments unless by special request and approved by CASQA.