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.
Important News – Be In the Know!
- Did you miss ELAPCon-2024? Check out the recordings linked on the ELAPCon webpage!
- Method Development Opportunity – Los Angeles Regional Board
- Updated ELAP Fees Effective Oct. 18, 2023.
- ELAP offers methods affected by the 2021 Methods Update Rule
About ELAP
Who we are and what we do.
Apply for Accreditation
Application forms, Fields of Accreditation Tables, and fee information.
Roadmap to ELAP Accreditation
Resources to help ELAP laboratories comply with regulations that went into effect on January 1, 2021.
Proficiency Testing
Guidance on proficiency testing (PT) requirements and tools to help you create a plan for your laboratory.
Laboratory Assessments
Information about laboratory assessments by ELAP and third-party assessment (TPA) agencies.
Enforcement
Enforcement advisories and historical enforcement actions against accredited laboratories.
Methods Update Rule
Information related to methods affected by the US EPA’s method update rule.
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.
Laws and Regulations
Links to current ELAP laws and regulations.
Frequently Asked Questions
A list of FAQs to answer all your important questions.
ELAP Forms and Checklists
All the forms and checklists you need in one place.
Contact Us
Get in touch with ELAP.
Subscribe directly to the ELAP Email List
Subscribe to our ELAP email list to receive notifications and the latest updates.
Map of Accredited Laboratories
- LOOKING FOR A LAB?
Search our Geographic Information System (GIS) Map to find ELAP-accredited laboratories.
ELAP Con 2025
Registration for ELAP Con 2025 is now open! Visit the conference website for more information.
Guidance Tools
Please use our Application Timeline Guidance Tool for assistance planning when to have your onsite assessment, schedule your proficiency testing, and submit your application.
Use our Relocation Timeline Guidance Tool to determine when you need to alert ELAP of your laboratory relocating, when to schedule proficiency tests and an onsite assessment at your new location, and when to submit your amendment application for the new location.
Report a Laboratory
- To report a concern or complaint about an environmental laboratory, please contact the ELAP technical inbox at elapca_technical@waterboards.ca.gov.
