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

There are no upcoming events at this time.

EPA seeks public input on draft toxicity assessments for PFAS chemicals

EPA has posted an advanced copy of the federal register notice (and supporting documents) requesting public review and comment on, “Draft Human Health Toxicity Assessments for Hexafluoropropylene Oxide Dimer Acid and its Ammonium Salt (GenX Chemicals) and for Perfluorobutane Sulfonic Acid (PFBS) and Related Compound Potassium Perfluorobutane Sulfonate.”
Following closure of the 60-day public comment period, EPA will consider the comments, revise the draft documents and consider the need for additional peer review, as appropriate, and then publish the toxicity assessments; LINK HERE

Recent Publications

Remedial Action Focus Group Bankruptcy Paper 2018

(10/2/2018) - This paper is intended to help States identify and understand potential issues associated with settlement negotiations, especially financial assurance, and ... Read More

ASTSWMO Position Paper on the Importance of Community Involvement

(8/29/2018) - The history of community involvement in the environmental field has been one of staggered improvement across the nation. The process, ... Read More

State Fund Survey Results 2017

(8/24/2018) - Summary Table 1: Design Characteristics of State Financial Assurance Funds 2017 Table 2: Funding for State Financial Assurance Funds 2017 ... Read More

Recent News

  • We have a new tool to view recent PFAS news. To learn more click here
  • Oklahoma Receives EPA Approval of State CCR Permit Program

    On June 18, 2018, EPA announced its approval of Oklahoma’s coal combustion residuals (CCR) permit program. Oklahoma is the first State to receive such approval. More information can be found on the EPA website here


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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.
ASTSWMO added 47 new photos — in Bethesda, Maryland.
ASTSWMO is with Charles Reyes.
Opening of the PFAs National Summit
ASTSWMO added 22 new photos.
ASTSWMO added 3 new photos.
National tanks conference planning meeting.
ASTSWMO added 4 new photos — in Sedona, Arizona.
ASTSWMO has launched it's new website, feel free to check it out.


@ASTSWMO⁩ & ⁦ @ECOStates⁩ representing the States & Territories for #AmericaRecyclesDay https://t.co/3auHXNZJkh ASTSWMO photo

Hey USA!! Do you recycle?? Let’s all do our part to increase recycling!!! #AmericaRecyclesDay https://t.co/gqrRFt33Qa
U.S. EPA Region 10 @EPAnorthwest
Nov. 15th is #AmericaRecyclesDay. #RecycleRight by knowing which items are and aren't recycled by your local recycler. #ReduceReuseRecycle https://t.co/zh7YY39UBb

Congrats to Jennifer Roberts ⁦ @ASTSWMO⁩ 2018 Lifetime Achievement Award Winner!! https://t.co/Rth5kciy8i 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.