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

Mid-Year Meeting registration is now open.

Recent Events

Presentations and recordings will be posted here.

Recent Publications

TI Waivers Webinar (2/25/2020) - The ASTSWMO Remedial Action Focus Group will present the data that came from the research tool on Technical Impracticability (TI)… ... Read More
Removals Request Form (12/19/2019) - The ASTSWMO Removals Focus Group (Focus Group) has developed a form for putting together consistent referral packages across the States… ... Read More
Uniformity of Time Critical Removal Actions (12/19/2019) - The ASTSWMO Removals Focus Group has developed a form for putting together consistent referral packages across States. This form identifies… ... Read More

Non-ASTSWMO Events

Food Waste – In the News:

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PFAS – In the News:

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Recent News


Click here to view our most recent newsletter. To see our previous newsletters follow this link. To be added to our newsletter please fill out our contact form on our Contact Us page.



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.
ASTSWMOThursday, February 20th, 2020 at 1:48pm
Members of the ASTSWMO Tanks Subcommittee at a meeting in Washington D.C.
ASTSWMOTuesday, January 28th, 2020 at 8:07pm
Board members at the ASTSWMO January Board Meeting in Napa CA.
ASTSWMO added 15 new photos — in Seattle, Washington.Monday, July 29th, 2019 at 12:50pm
ASTSWMO added 36 new photos.Wednesday, May 22nd, 2019 at 7:16pm
ASTSWMO added 9 new photos.Tuesday, November 27th, 2018 at 9:09pm
Thank you to Dania Rodriguez for representing ASTSWMO
ASTSWMO added 47 new photos — in Bethesda, Maryland.Friday, November 2nd, 2018 at 6:13pm


Wednesday, January 29th, 2020 at 4:07am
Board working hard on discussing and approving policy updates! https://t.co/bSp2sHt7Du ASTSWMO photo
Friday, November 15th, 2019 at 10:35am
ASTSWMO President Conchita Taitano of Guam EPA representing the membership at Recycling Roundtable. #americarecyclesday #astswmo https://t.co/Az4BOwLcwZ ASTSWMO photo
Thursday, October 31st, 2019 at 5:50pm
So proud of that annual meeting attendees for coming together to raise over $1800 for @CityBlossoms of DC!! https://t.co/2rPNdUgd8Q ASTSWMO photo
Wednesday, October 30th, 2019 at 3:03pm
Newly elected ASTSWMO VP Brent Everett if @UtahDEQ talks about work-sharing and the superfund program. https://t.co/yWm2KYgHqa ASTSWMO photo

Become a Member

To become a 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.