LA Lab Accreditation

The Louisiana Environmental Laboratory Accreditation Program is designed to ensure the accuracy, precision, and reliability of the data generated, as well as the use of the department-approved methodologies in the generation of that data. Laboratory data generated by commercial environmental laboratories that are not accredited under these regulations will not be accepted by the department in accordance with LAC 33:I.4501.A.2. Whenever samples are subcontracted to another environmental testing laboratory, the original laboratory shall maintain a verifiable copy the results with a chain of custody. The subcontracting procedure may not be used to circumvent proper accreditation or any state requirements. The original laboratory is responsible for ensuring that the secondary laboratory used is properly accredited for the scope of testing performed in accordance with LAC 33:I.5307.D.


Applying for Accreditation

Click Here to Apply for Accreditation


Lelap Accredited Labs *

Laboratory Scopes of Accreditation **

 * - Please note that this list also includes labs with pending accreditation

** - The laboratory accreditation data is being pulled real time from a separate server so delays in processing requests should be expected




The EPA has updated its "Guidelines Establishing Test Procedures for the Analysis of Pollutants Under the Clean Water Act; Analysis and Sampling Procedures", also known as the "Method Update Rule". The new rule was published on August 28, 2017 and will take effect on September 27, 2017. For more information please read the Method Update Rule memo. For a copy of the rule, please access this link:

The EPA has announced that a newly proposed "Method Update Rule" for 2019 is in progress. For the link to the current status of the rule, please access this link: 

All laboratories or other individuals with questions or seeking accreditation may contact Kimberly Hamilton-Wims, Supervisor, LDEQ Laboratory Accreditation Program at (225) 219-3247 or


Additional Information


Helpful Links


LELAP Staff Location Phone Email
Kimberly Hamilton-Wims, Supervisor DEQ Headquarters (225) 219-3302

Elizabeth West Northwest Regional Office (318) 676-7457
Lily Giles DEQ Headquarters (225) 219-3268
Mark Johnson DEQ Headquarters (225) 219-2513


NOTE: To lodge a laboratory accreditation-related complaint, contact the LDEQ Ombudsman