The Missouri Department of Health and Human Services oversees the wastewater systems of Missouri.

https://health.mo.gov/living/environment/onsite/index.php

A great resource for investigating wastewater treatment systems in Missouri.

https://www.mosmallflows.org/

Guidance and technical information to help communities establish comprehensive septic (onsite) wastewater management programs.

https://www.epa.gov/septic/septic-systems-guidance

Great resource for determining the type of soil on and near your property.

https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx

NOWRA is the largest organization in the U.S. dedicated to representing the onsite and decentralized wastewater industry. Our mission is advancing sustainable decentralized wastewater infrastructure through advocacy and professional development, to protect public and environmental health

https://www.nowra.org/