About Us
Gulf Coast Testing’s core values are quality, professionalism, reliability and impartiality. They are the foundation of how we test and certify residential wastewater treatment systems and equipment.
As a certification body, GCT does not design, manufacture, install, sell or consult on the products we certify. Our role is to test and evaluate each product against the applicable NSF/ANSI standard and to make an impartial certification decision based on the results.
Certification ProgramHow certification works, the documents we use, and the criteria for each standard. Certified CompaniesSearch the official listing of companies and models certified by GCT. Our Test SiteA residential test site in Prairieville, Louisiana, fed by a neighborhood of about 450 homes. Policies & ProceduresOur Quality Manual, Quality Procedures and Certification Policies.