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

LUST Workshop Registrations CLOSED

ASTSWMO Election for Officers

The 2019 election of ASTSWMO’s Vice-President will occur on October 30, 2019, during ASTSWMO’s Annual Meeting. Elections are governed by ASTSWMO’s Bylaws, which specify that the designated Voting Representative from each State and Territory (State) will vote on behalf of their State.

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Recent Publications

Optimizing for the Post Construction Phase of Superfund Sites (10/10/2019) - This document is solely intended to help States in identifying efficient and effective adaptive Operational and Maintenance management practices that… ... Read More
UST Insurance Brochure (9/26/2019) - This Association of State and Territorial Solid Waste Management Officials created the UST Insurance Brochure to provide some basic information… ... Read More
UST Financial Responsibility Insurance Submittal Checklist for Regulators (9/26/2019) - The State Fund-Financial Responsibility (SF-FR) Task Force created the UST Financial Responsibility Insurance Submittal Checklist to assist States in their… ... Read More

Food Waste – In the News:

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PFAS – In the News:

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Recent News

  • Register today for the Great Lakes Environmental Remediation and Redevelopment Conference, taking place October 16-18 in Lansing, Michigan. Join us to learn the latest in remediation and redevelopment in the Great Lakes region. Hear about remediation, emerging contaminants, program implementation and performance, redevelopment, and region-wide interest topics. Learn about management methods, successful solutions, and best practices. Learn More


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.
ASTSWMO added 15 new photos — in Seattle, Washington.
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ASTSWMO added 36 new photos.
ASTSWMO added 9 new photos.
Thank you to Dania Rodriguez for representing ASTSWMO
ASTSWMO added 47 new photos — in Bethesda, Maryland.
ASTSWMO is with Charles Reyes.
Opening of the PFAs National Summit
ASTSWMO added 22 new photos.


Just 20 days away till our Annjal Meeting! Will you be there to help us celebrate our 45th anniversary?? #ASTSWMO45 #statesleadingtheway

Want to work in New Mexico and protect the environment?? Then check out this position!!! https://t.co/erFQOvtjp6
New Mexico Environment Department @NMEnvDep
We're #hiring! Join our team in #SantaFe. We're tackling some of the most pressing issues facing #publichealth and the #environment right here in #NewMexico! https://t.co/i20k2Yfmre

Talking CCT, Corr Action, STAG and more!! https://t.co/mNPGd2PmM0 ASTSWMO photo

ASTSWMO congratulates our fiend and colleague Barry Breen on his @ABAEnvLaw award! Well deserved!! https://t.co/F5HnNVQ9WO
EPA Land @EPAland
#ICYMI: 🎉 Congrats to Barry Breen, for receiving @ABAEnvLaw's Environment, Energy & Resources Government Attorney of the Year Award! He is recognized for exceptional achievements and for having consistently achieved distinction in an exemplary way throughout his career!🌟 https://t.co/GyAPEaWdDv

Day 2 of the #2019LUSTWorkshop and discussing legacy sites!! https://t.co/TluZF5Wnb5 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 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.