Other Utilities Trade Associations

American Biogas Council (ABC)

U.S. trade association for the full biogas/RNG value chain—developers, operators, utilities, OEMs—advocating policy, market growth, and best practices.

https://americanbiogascouncil.org Membership: 5,000

American Membrane Technology Association (AMTA)

North American association advancing membrane technologies for water, wastewater, reuse and desalination through advocacy, training, and events.

https://www.amtaorg.com Membership: 940

American Public Works Association (APWA)

Cross-discipline public works association serving water, wastewater, stormwater, solid waste and other municipal service departments with education and advocacy.

https://www.apwa.org Membership: 32,000

American Water Resources Association (AWRA)

Multidisciplinary professional association focused on water resources science, management, and policy, publishing JAWRA and hosting technical conferences.

https://www.awra.org Membership: 2,000

American Water Works Association (AWWA)

Largest organization of water supply professionals worldwide—utilities, operators, manufacturers, and researchers—providing standards, training, and advocacy.

https://www.awwa.org Membership: 50,000

Association of State Drinking Water Administrators (ASDWA)

Association for state drinking water program leaders (primacy agencies) providing a coordinated voice to EPA/Congress and resources for safe drinking water.

https://www.asdwa.org Membership: 57

Association of Water Technologies (AWT)

International association of industrial/commercial water treatment companies and suppliers focused on cooling/heating systems—training, certification, and networking.

https://www.awt.org Membership: 550

California Stormwater Quality Association (CASQA)

California’s statewide stormwater quality association supporting MS4s, special districts, utilities, and consultants with policy engagement and technical guidance.

https://www.casqa.org Membership: 2,000

Coalition for Renewable Natural Gas (RNG Coalition)

North American coalition advancing renewable natural gas from organics and wastewater, representing producers, utilities, fleets, and technology providers.

https://www.rngcoalition.com Membership: 400

International District Energy Association (IDEA)

Global district energy industry group for heating, cooling and CHP systems—utilities, campuses, cities—offering market development, best practices, and policy.

https://www.districtenergy.org Membership: 3,000

International Water Association (IWA)

Worldwide network of water and wastewater professionals and utilities fostering knowledge-sharing, standards, and leadership for sustainable water management.

https://www.iwa-network.org Membership: 10,000

National Association of Sewer Service Companies (NASSCO)

Trenchless and sewer infrastructure association that sets inspection/rehab standards (e.g., PACP/MACP/LACP) and advocates for underground asset management.

https://www.nassco.org Membership: 700

National Hydropower Association (NHA)

U.S. hydropower industry association spanning utilities, IPPs, OEMs, and service firms, advocating permitting, market integration, and innovation.

https://www.hydro.org Membership: 350

National Rural Water Association (NRWA)

Nation’s largest water/wastewater utility membership organization supporting rural and small systems with training, technical assistance, and advocacy.

https://www.nrwa.org Membership: 31,000

National Utility Contractors Association (NUCA)

Underground utility construction trade group for water, sewer, gas, electric, and telecom contractors and suppliers—advocacy, safety, and workforce programs.

https://nuca.com Membership: 2,000

National Waste & Recycling Association (NWRA)

Private-sector solid waste and recycling industry association representing haulers, recyclers, equipment makers and service providers—policy and safety focus.

https://wasterecycling.org Membership: 700

Solid Waste Association of North America (SWANA)

North American solid waste professionals’ association for public/private sectors—training, certification, research, and policy leadership.

https://swana.org Membership: 10,000

WateReuse Association

Only national trade association dedicated to water recycling; members include utilities, technology firms, and end users advancing reuse policy and projects.

https://watereuse.org Membership: 500

Water Environment Federation (WEF)

Water quality professionals’ federation—operators, engineers, and scientists—advancing wastewater/stormwater practice via WEFTEC, standards, and advocacy.

https://www.wef.org Membership: 34,000

Water Quality Association (WQA)

Trade association for POU/POE water treatment manufacturers, dealers, and distributors—standards, certification, and legislative advocacy.

https://www.wqa.org Membership: 2,500