Letters to EPA/Administration
- NPDES CSO Permitting Guidance (March 2024)
- Financial Capability Assessment (November 2022)
- Financial Capability Assessment Guidance Comments (April 2022)
- Letter to the Administrator RE: Regulatory Freeze (March 2025)
- Lead and Copper Rule Improvements (February 2024)
- Lead and Copper Rule Improvements, Federalism Comments (December 2022)
- Lead and Copper Rule Revisions (February 2020)
- Federalism Comments (March 2025)
- Letter to the Administrator RE: Regulatory Freeze (March 2025)
- PFAS Drinking Water Standards (May 2023)
- Designation of PFOS and PFOA as Hazardous Substances under CERCLA (November 2022)
- Federalism Considerations: PFOS and PFOA as Hazardous Substances under CERCLA (July 2022)
- PFAS Drinking Water Standards, Federalism (April 2022)
- Repeal of Greenhouse Gas Emissions Standards for Power Plants (August, 2025)
- Greenhouse Gas Power Plant Proposal (August, 2023)
- EPA Greenhouse Gas Emissions EGUs (November, 2022)
- EPA Clean Power Plan Pre-Proposal (February, 2018)
- Consumer Confidence Report Proposal (May 2023)
- Memorandum: Cybersecurity for Public Water Systems (January 2023)
- Federalism: Consumer Confidence Report (October 2022)
- Safer Communities by Chemical Accident Prevention: Risk Management Program (October 2022)
- Clean Air Act Standards for Large Municipal Waste Combustors (March 2024)
- Federalism: Clean Air Act Standards for Large Municipal Waste Combustors (May 2023)
Legislative Advocacy on the Hill
- State Revolving Loan Fund Appropriations Letter (October 2025)
- Fiscal Year 2026 Water Programs (June 2025)
- Water Infrastructure Financing CWSRF and WIFIA (March 2025)
- LIHWAP FY 2025 Letter of Support (July 2024)
- State Revolving Funds (SRF) Appropriations Letter (September 2023)
- City-Climate Coalition, FY 2024 Letter
- IIJA Water Infrastructure Appropriations (April 2023)
- H.R. 1023 Letter (March 2023)
- Support for IRA Tax Credits (Senate, April 2025)
- Support for IRA Tax Credits (House, April 2025)
Amicus Briefs
- Delaware v. BP (2022)
- City of Hoboken v. Exxon Mobile Corp (2021)
- City/County of Honolulu v. Sunoco LP (2021)
- Mayor & City Council of Baltimore v. BP (2021)
- Boulder County v. Suncor Energy (2020)
- City of Oakland v. BP (2019)
- County of San Mateo v. Chevron Corp (2019)
- Rhode Island v. Shell Oil Products Co (2019)
- City of New York v. BP (2018)