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Wastewater Treatment Systems (OWTS) Program
NEHA is committed to providing education,
resources, and support to onsite wastewater professionals around the
country. Here you'll find information about our newest projects and
the services we offer.
New Resources Available!
*Click on a link below to read more
Performance and Costs for Decentralized Unit Processes - WERF/DWRC
Clean Water and Drinking Water Infrastructure Sustainability Policy - EPA
Current OWTS Projects
We continue to work with the U.S. Environmental Protection Agency (USEPA) and other partner groups to promote improved onsite wastewater treatment systems (OWTS) design, installation, operations and management. This includes NEHA’s Annual Educational Conference & Exhibition (AEC) and online educational opportunities.
The new Certified Installer of Onsite Wastewater Treatment Systems (CIOWTS) credential is now available! This nationally-available credential covers all forms of installation and is offered at both a basic and advanced level. For more information on the credential, please contact the NEHA Credentialing Department at 303.756.9090, ext. 337 or 339 or visit our
CIOWTS information page.
In addition to developing the national credential for onsite wastewater system installers, NEHA is part of a select group of national organizations that signed a
Memorandum of Understanding (MOU) with USEPA to improve the quality and quantity of resources and education available to professionals in the onsite wastewater field, state and local regulatory agencies and those whose work involves building on or buying/selling land with dwellings that will use an onsite system.
NEHA OWTS Resources
Wastewater Credential - Learn more about the development and implementation of this exciting new credential.
Conferences and Workshops - Each year NEHA puts on a number of conferences and workshops, including the Annual Educational Conference
(AEC) & Exhibition.
AEC will include the Onsite Wastewater Systems Summit (Summit), a
collaboration between NEHA, the National Onsite Wastewater Recycling
Association (NOWRA), the State Onsite Regulators Alliance (SORA) and the
US Environmental Protection Agency (EPA). The Summit will include an expanded educational offering as well as a
field trip and special events in the exhibit hall. Please visit
for more information.
E-learning Opportunities – NEHA has select onsite wastewater educational opportunities available online at
http://www.nehacert.org/moodle/. These sessions also provide continuing education credit.
of Environmental Health - The Journal of Environmental Health is published 10 times per year by the National Environmental Health Association and keeps readers up-to-date on current issues, new research, useful products and services, and employment opportunities. We frequently cover issues of importance to onsite wastewater professionals, and reprints are available through
Bookstore - NEHA's bookstore provides environmental health professionals with the latest in relevant educational material. In our Water Quality section, we feature a number of resources for those in the onsite wastewater field.
Calendar of Events - Many NEHA affiliate conferences and other conferences have sessions for OSWS. Check our calendar periodically to find events of interest.
Opportunities from Partner Associations
Water Environment Research
Requests for Proposals
Onsite Wastewater Recycling Association
Other OWTS Resources
Septic (Onsite/Decentralized) Systems Web Site
National Association of Wastewater
National Onsite Wastewater Recycling
National Rural Water Association (NRWA)
National Small Flows Clearinghouse
Rural Community Assistance Corporation
Rural Community Assistance Program
Water Environment Federation (WEF)
Wastewater Management Guidelines for Tribes
American Waterworks Association (AWWA)