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National Onsite Organizations

NOWRA

NOWRA

NOWRA

 

  • National Onsite Wastewater Recycling Association (NOWRA): The largest U.S. organization representing the decentralized wastewater industry.

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NAWT

NOWRA

NOWRA

 

  • National Association of Wastewater Technicians (NAWT): Provides national training and certification for inspectors and maintenance providers.

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SOWRA

NOWRA

SOWRA

 

  • State Onsite Regulators Association (SORA): Focuses on the regulatory community and government oversight of onsite systems.

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NEHA

NEHA

SOWRA

 

  • National Environmental Health Association (NEHA): Covers septic systems as part of broader environmental health and sanitation standards.

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NRWA

NEHA

NRWA

 

  • National Rural Water Association (NRWA): Supports small and rural community wastewater programs.

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WEF

NEHA

NRWA

 Water Environment Federation (WEF): A global network of water quality professionals with dedicated decentralized wastewater resources. 

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OSSF Training and Organizations by State

Business Consulting

 

A – D

  • Alabama: Alabama Onsite Wastewater Association (AOWA)
  • Alaska: No dedicated onsite wastewater association; oversight by Alaska Department of Environmental Conservation
  • Arizona: Arizona Onsite Wastewater Recycling Association (AzOWRA)
  • Arkansas: Arkansas Onsite Wastewater Association
  • California: California Onsite Wastewater Association (COWA)
  • Colorado: Colorado Professionals in Onsite Wastewater (CPOW)
  • Connecticut: No independent association; coordinated via CT Dept. of Public Health - Subsurface Sewage Program
  • Delaware: Delaware Onsite Wastewater Recycling Association (DOWRA)

F – I

  • Florida: Florida Onsite Wastewater Association (FOWA)
  • Georgia: Georgia Onsite Wastewater Association (GOWA)
  • Hawaii: Managed by Hawaii Department of Health – Wastewater Branch
  • Idaho: Idaho Onsite Wastewater Association (IOWA)
  • Illinois: Illinois Association of Wastewater Agencies (IAWA)
  • Indiana: Indiana Onsite Wastewater Professionals Association (IOWPA)
  • Iowa: Iowa Onsite Waste Water Association (IOWWA)

K – M

  • Kansas: Kansas Small Flows Association (KSFA)
  • Kentucky: Kentucky Onsite Wastewater Association (KOWA)
  • Louisiana: Louisiana Onsite Wastewater Association (LOWA)
  • Maine: Maine Association of Site Evaluators (MASE)
  • Maryland: Maryland Onsite Wastewater Professionals Association (MOWPA)
  • Massachusetts: Massachusetts Onsite Wastewater Association (MOWA)
  • Michigan: Michigan Onsite Wastewater Recycling Association (MOWRA)
  • Minnesota: Minnesota Onsite Wastewater Association (MOWA)
  • Mississippi: Mississippi Onsite Wastewater Association (MSOWA)
  • Missouri: Missouri Smallflows Organization (MSO)
  • Montana: Montana Onsite Wastewater Association (MOWWA)

N – P

  • Nebraska: Nebraska Onsite Wastewater Association (NOWA)
  • Nevada: Nevada Onsite Wastewater Association (NOWA)
  • New Hampshire: Granite State Designers and Installers (GSDI)
  • New Jersey: New Jersey Septic Management Group (NJSMG)
  • New Mexico: New Mexico Onsite Wastewater Association (NMOWA)
  • New York: New York Onsite Wastewater Treatment Education Program (OTEP)
  • North Carolina: North Carolina Onsite Wastewater Contractors & Inspectors Association (NCOCIA)
  • North Dakota: Oversight by ND Department of Environmental Quality – Wastewater Program
  • Ohio: Ohio Onsite Wastewater Association (OOWWA)
  • Oklahoma: Oklahoma Onsite Wastewater Association (OOKWA)
  • Oregon: Oregon Onsite Wastewater Association (O2WA)
  • Pennsylvania: Pennsylvania Association of Sewage Enforcement Officers (PASEO)

R – W

  • Rhode Island: Rhode Island Onsite Wastewater Training Program (OWTS)
  • South Carolina: South Carolina Onsite Wastewater Association (SCOWA)
  • South Dakota: South Dakota Onsite Wastewater Association (SDOWWA)
  • Tennessee: Tennessee Onsite Wastewater Association (TOWA)
  • Texas: Texas Onsite Wastewater Association (TOWA)
  • Utah: Utah Onsite Wastewater Association (UOWA)
  • Vermont: Vermont Wastewater Program – Agency of Natural Resources
  • Virginia: Virginia Onsite Wastewater Recycling Association (VOWRA)
  • Washington: Washington Onsite Sewage Association (WOSSA)
  • West Virginia: West Virginia Onsite Wastewater Association (WVOWA)
  • Wisconsin: Wisconsin Onsite Water Recycling Association (WOWRA)
  • Wyoming: Wyoming Onsite Wastewater Recycling Association (WYOWA)

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