Missouri Regulations
State definition of site evaluations
https://health.mo.gov/living/environment/onsite/pdf/onsite_ref_book.pdf
Minimum setback distances for OWTS in Missouri
https://health.mo.gov/living/environment/onsite/pdf/SiteEval.pdf
Dye Tracers are legally required to be registered with Missouri Department of Natural resources
https://dnr.mo.gov/water/what-were-doing/missouri-water-tracing-laboratory