Environmental Laboratory Accreditation Program (ELAP)

MISSION: To implement a sustainable accreditation program that ensures laboratories generate environmental and public health data of known, consistent, and documented quality to meet stakeholder needs.

VISION: Through effective program implementation and continuous improvement of ELAP, California will utilize the highest quality scientific data as a foundation for its environmental and public health programs and decisions.


Recent News

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About ELAP

Who we are, what we do, and the latest news. Environmental Laboratory Accreditation Program (ELAP) program information, announcements, and an events calendar.


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Apply for Accreditation

Application forms, Fields of Accreditation Tables, and fee information.


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Roadmap to ELAP Accreditation

Resources to help ELAP laboratories comply with regulations that went into effect on January 1, 2021.


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Proficiency Testing

Guidance on proficiency testing (PT) requirements and tools to help you create a plan for your laboratory.


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Laboratory Assessments

Information about laboratory assessments by ELAP and third-party assessment (TPA) agencies.


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Enforcement – COMING SOON!

Enforcement advisories and historical enforcement actions against accredited laboratories.


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Environmental Laboratory Technical Advisory Committee (ELTAC)

Our advisory committee provides scientific advice to ELAP and the California regulatory agencies that use data from accredited laboratories. Click here for information on the committee’s mission, members, meetings, and work products.


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Laws and Regulations

Links to current ELAP laws and regulations.


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Frequently Asked Questions

A list of FAQs to answer all your important questions.


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ELAP Forms and Checklists

All the forms and checklists you need in one place.


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Contact Us

Get in touch with ELAP.


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Map of Accredited Laboratories

2021 California ELAP Conference

ELAP Conference Logo, Quality through Collaboration, first California Environmental Laboratory Accreditation Program Conference

June 1 - 3, 2021

For details and registration information, please visit the ELAP Conference Webpage.