Our Mission: To enhance and promote effective State and Territorial programs and to affect relevant national policies for waste and materials management, environmentally sustainable practices, and environmental restoration.

Upcoming Events

Registration for the ASTSWMO Annual Meeting is now closed.

Recent Events

Presentations and recordings will be posted here.


Click here to view the most recent edition of our newsletter. To see our previous newsletters follow this link. To be added to our newsletter please fill out our contact form here.

ASTSWMO Highlights

ASTSWMO has released a statement on EPA’s Proposal for PFAS National Primary Drinking Water Regulation

Take a step back and look at the 2022 ASTSWMO Year in Review. Thank you to all of our members for your support, engagement and hard work!

Read ASTSWMO President Millie Garcia-Serrano’s letter addressed to the membership outlining her vision for 2023.

ASTSWMO has released a statement regarding the EPA’s Proposal to Designate PFOA and PFOS as Hazardous Substances Under CERCLA. Read more here.

The ASTSWMO Federal Facilities Subcommittee developed a new webpage, Training Resources for State Federal Facility Managers, to provide a compendium of available training resources and opportunities for ASTSWMO members responsible for overseeing environmental compliance and cleanups at federal facilities.

ASTSWMO Mission Video

See all the videos here

September 2023 Member Spotlight

Food Waste – In the News:

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PFAS – In the News:

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ASTSWMO was incorporated in 1974, and has maintained a full time office in Washington, DC, since 1980. The Association holds two general membership meetings each year, and a number of specialized roundtables, workshops or conferences for specific program areas of high interest. The Association also provides a steady flow of services and information to our members along program specific lines throughout the year. We work closely with the U.S. Environmental Protection Agency to ensure that our members are aware of the most current developments related to their programs and coordinate the work of our State regulators with that of their federal counterparts. The Association also represents the interests of our members in Washington, DC. While no single entity can speak for all State waste programs, the capability of consolidating similar views and ensuring that State managers have the opportunity to speak in unison on important waste management issues assists their ability to influence national decision-making. ASTSWMO's most important role is to assist States in learning from and working with other State peers. Within the Association it is an axiom that States learn best from other States in matters of program implementation, and ASTSWMO's collective efforts are all focused on making that happen.
ASTSWMOTuesday, July 18th, 2023 at 3:51am
Thank you @timandelyserock for all of your dedicated service to ASTSWMO!

Tim first joined ASTSWMO in 2010 as a member on the Remedial Action Focus Group on the CERCLA & Brownfields Subcommittee. Since then, Tim has contributed immensely to the Focus Group, the Subcommittee, and then as the ASTSWMO President from 2021-2022.

Thank you Tim for everything, and don’t worry, we’ll always keep you close ☺️
ASTSWMOMonday, July 3rd, 2023 at 12:25pm
🎇 Happy Independence Day!

Thank you to all of our members for making ASTSWMO shine so bright!

ASTSWMOTuesday, June 20th, 2023 at 12:57pm
It’s Summer! (Well, almost.)

Celebrating our members is a great privilege and this month we honor Prabhat and Doug!

Check out our website to see all ASTSWMO Member Spotlight Series, and if you’re a member, you might be featured 👀✨

ASTSWMOSunday, May 14th, 2023 at 2:55am
We have such aMAYzing remembers and are so lucky to be able to honor them each month!

ASTSWMOFriday, May 12th, 2023 at 11:46am
Our members are so aMAYzing, and we are so lucky to honor them each month 😊

ASTSWMOThursday, May 11th, 2023 at 1:05pm
Congratulations to Charles Reyes, former ASTSWMO Associate Director now ITRC Director!

We as Staff are so happy to have worked with Charles for #Almost15Years and we’re even more excited to continue working with him in our partnership with ITRC. Charles, you will be missed by all ASTSWMO members, State/Territory folk, and other organizations you’ve worked with.

Thank you for all that you’ve done, and good luck in your new role!



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Become an Active Member

To become a an active member please download, review, and fill out the form below. When you complete it please email it to the appropriate ASTSWMO staff (listed at the top of the form).

New Member Form

Members in Action Guidance Document

Lifetime Achievement Award

In 2002, ASTSWMO instituted the ASTSWMO Lifetime Achievement Award, to recognize an outstanding individual who has worked in State government in the areas of solid and hazardous waste management, sustainability/materials management, underground storage tanks, or contaminated site clean-up.

The purpose of the award is to recognize work done on behalf of the States and in furtherance of ASTSWMO’s mission to enhance and promote effective State and Territorial programs for waste and materials management, to encourage environmentally sustainable practices, and to affect relevant national waste and materials management policies.

Click here for the full description and a list of past winners.