Environmental laboratory accreditation

Laboratories that analyze environmental samples must be capable of providing accurate and defensible analytical data. Many grant-based or legislatively-mandated scientific studies require the use of an accredited laboratory. In Washington, such labs must receive accreditation through Ecology to ensure they are conducting analyses according to prescribed methods. Many of these labs will accept samples from businesses or the public.

Find a lab

Lab Search database — Find an accredited lab. Search by area, environmental parameter (analytes), and more.
Map of Commercial Environmental Laboratory Locations makes it easier to find locations in your area that may take your environmental samples.
How to choose an analytical laboratory offers considerations to keep in mind when deciding which lab to hire for your analyses.

Printable lab lists

Information for labs

Scientists in lab coats watch a computer screen.

Rulemaking open for Accreditation of Environmental Laboratories rule

Learn about current rulemaking updates proposed for WAC 173-50 Accreditation of Environmental Laboratories and how you can participate.

Applying for laboratory accreditation offers instructions for those laboratories new to the process.
Learn about the laboratory accreditation fee schedule.

Manuals & procedures for accredited labs has the latest manual, procedures, methods, codes, and other accreditation topics.

To assure accreditation renewals are promptly managed, please keep us updated with your current email address. We notify environmental labs six weeks before accreditation expires with a renewal application and a report of your lab's currently requested parameters. Contact Ruth Powers-Piccone if you do not receive a renewal application and/ or when you are ready to submit your completed renewal application.

To ensure you receive renewal notices, please add "donotreply@ecy.wa.gov" to your contacts list.

Contact information

Rebecca Wood
Supervisor, Laboratory Accreditation Unit
rebecca.wood@ecy.wa.gov
360-742-7022

Were you able to find what you were looking for today?*:	Yes No Not sure
What were you trying to find?*:
Please describe your experience. What was challenging? What was helpful? *:	Please include details that will help us address any issues you're reporting. NOTE: There is a 1,500 character limit (including spaces) on this form field.
Was the search tool helpful to you? *:	Yes No I didn't use Search.
How can we improve our website?:	Optional. If you have suggestions, we'd like to hear them! NOTE: There is a 1,500 character limit (including spaces) on this form field.
Your name:	Please include contact information if you'd like a reply.
Email:	If you’d like a reply, please provide an email address.
Phone number:	( ) - Second three digits Last four digits If you’d like us to call you, please provide a phone number.
Which best describes your role in visiting our site today?*:	Business / Consultant / Contractor Government - Local Government - State Government - Federal Government - Tribal Scientist / Researcher Non-profit Washington resident / Public Educator Student Job seeker Ecology employee
PleaseLeaveBlank:	Are you a robot? If not, please do not enter anything in this field.
	ignore
	ignore