An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

EPA Certifications

EPA manages several programs that certify technicians, service locations, laboratories or products. The page contains an automatically-generated list of EPA webpages that include the word “certification” in the title. Entries are listed with the most recently updated pages at the top.

NOTE: Some certification programs are delegated to state authorities and/or authorized testing organizations. If you do not find the information you need below, please reach out to your state authority. Find your local authority's contact information in the list of Health and Environmental Agencies of U.S. States and Territories.

Certification and Recertification of WIPP

View certification and recertification information and links to documents pertaining to the Waste Isolation Pilot Plant (WIPP) in New Mexico.

Certification and Fuel Economy for Light-Duty Passenger Cars and Trucks

Steps for certifying an onroad passenger vehicle with EPA.

Certification and Inspection

Certification and inspection provides homeowners with confidence that their WaterSense labeled home is water-efficient and high-performing.

Professional Certification

WaterSense labeled programs for irrigation professionals assess professional competency in irrigation system design, installation and maintenance, and auditing.

Section 608 Technician Certification Programs

Provides links to companies that are EPA-approved Section 608 technician certification testing organizations.

Renovation, Repair and Painting Program: Firm Certification

This page describes EPA's Renovation, Repair and Painting Program Rule requirements for contractors.

Training for Drinking Water Laboratory Certification

Overview of EPA Chemistry and Microbiology Certification Officer Training Courses

Lead-Safe Certification Firm Logo Use Guidelines

Information for firms and training programs seeking to use the EPA Lead-Safe Certification program logo.

Options for Tribes to Establish EPA-Recognized Certification Programs in Indian Country

The 2017 Rule offers three options for tribes to establish valid EPA-recognized/approvable certification programs in Indian country, along with a fourth "opt-out" option.