A New Solution for Onsite Septic Systems

We are proud to introduce the  Advanced Enviro-Septic® Treatment System (“AES”) in Wyoming. Advanced Enviro-Septic® is the next generation of our effective and reliable Enviro-Septic® technology; Presby systems have received Class I Certification under NSF International/ANSI’s Standard 40 for Wastewater Treatment Devices.

Wyoming DEQ has approved AES product for the following applications:

  • Wyoming allows Presby system designs without an engineer for 5 bedrooms or less using the AES Application Package
  • Public and private onsite treatment with 30” or greater separation from AES pipe bottom to Seasonal High Ground Water.
  • The reduced bed size of the Advanced Enviro-Septic® will allow it to be up to 50% smaller than traditional stone trench systems.

Certification Required

We require individuals who wish to design or install an  Advanced Enviro-Septic® or Enviro-Septic® System be certified by attending the Enviro-Septic® Design and Installation Certification Class. The class offers various design and installation configurations, troubleshooting techniques and tricks of the trade. To view the class schedule and certification options click on the ‘Training and Certification’ tab above.


Wyoming Design and Installation Manual

PEI-Application 5 bedrooms or less 6-6-18