Resources for Professionals
Tools, Training, and Regulatory Links for Missouri’s Onsite Wastewater Community
Access essential tools, regulations, and partner organizations supporting Missouri’s onsite wastewater industry. Whether you’re an installer, inspector, soil evaluator, or educator, these resources provide the latest updates, training opportunities, and professional registries to help you stay informed and compliant.
Legislative Updates
2026 Bills in Missouri Legislature
Please support our bills in the Missouri Senate and House.
House Bill 2395
HB 2395 has passed out of Committee. Please contact your Representatives to support this bill. A phone call or email is the best way to show your support! We anticipate this bill to be debated on the floor during the week of March 9.
Download a Template Letter here.
Please submit your support to your Representative at any time!
Senate Bill 914
Missouri Department of Health & Senior Services (DHSS)
DHSS Main Website
Central access point for public health services and resources across Missouri.
Onsite Sewage Program Overview
Official page for Missouri’s onsite sewage program, including regulatory updates, forms, and standards.
Registered Onsite Wastewater Professionals (by County)
Look up certified professionals in your area.
Licensed System Inspectors/Evaluators
Directory of licensed professionals approved to inspect or evaluate systems.
Registered Onsite Soil Evaluators
List of approved evaluators authorized to assess soil suitability.
Statewide List of Approved CEU Courses
Find continuing education courses recognized by Missouri DHSS.
Registration/License Renewal Information
Check the information required to renew your professional license/registration.
Missouri Department of Natural Resources (DNR)
Missouri DNR Main Website
Comprehensive site for environmental resources and state programs.
Water Protection Program
Division focused on ensuring clean water through wastewater regulations, permitting, and compliance guidance.
National and Regional Partners
- NOWRA – National Onsite Wastewater Recycling Association
National organization supporting decentralized wastewater education and advocacy.
- CIDWT – Consortium of Institutes for Decentralized Wastewater Treatment
Academic and research-based network focused on onsite system performance and training resources.
Mapping and Watershed Organizations
CARES GIS Mapping – University of Missouri
Access environmental, agricultural, and resource-based GIS tools and mapping datasets.
James River Basin Partnership
Local nonprofit promoting clean water and sustainable practices in the James River watershed.
Watershed Committee of the Ozarks
Regional initiative focused on protecting and improving water quality in the Ozarks.
Lakes of Missouri Volunteer Program (LMVP)
Community-driven water monitoring and lake health tracking across Missouri.
Additional EPA Resources for Professionals
The U.S. Environmental Protection Agency (EPA) provides valuable tools and publications to support the onsite wastewater industry. These resources cover everything from technical guidance and funding programs to workforce development.
- Technical Information about Septic Systems
Access resources on approved products, toolkits, and pollution prevention education. - Decentralized Wastewater Workforce Reports
Explore EPA research and reports focused on building a sustainable decentralized wastewater workforce - Funding Resources for Septic Systems
Find funding opportunities from federal, state, and tribal sources for system upgrades and projects. - EPA Programs Related to Septic Systems
Learn about various EPA programs that promote innovation and responsible system management. - MSO Homeowner Recordkeeping Folder
Download MSO’s printable guide and logbook to help homeowners track their onsite system maintenance.
Looking for homeowner resources?
Visit our Dedicated Homeowner Resources page for user-friendly guides, system tips, and maintenance checklists.
Questions or need assistance finding a resource? We’re happy to help.
Contact us at contact@mosmallflows.org or call (417) 631-4027.