Welcome to Grand Traverse Analytical

Grand Traverse Analytical is located in Traverse City.  Kirk Chase and Mike Riebschleger opened GTA in 2002 with a simple idea to offer fast, reliable, affordable, and independent analytical testing. We are not associated with any other company or government entity other than Michigan Drinking Water EGLE Certification. If you become a high volume client, results are posted on our web site (requires a username and password) for historical searching and for those that did not get an email attachment.

We also provide:

• Most sample bottles no charge, unless taking to another lab, Methanol kits are $10/each
• Chain of Custody – COC’s can be downloaded/printed below
• On-line Data Reporting – requires a high volume of samples. When its determined you qualify for on-line reporting you will be provided with a password.
• General information regarding drinking water remediation either be cleaning your well water from bacteria contamination or referrals to those that can help.

Environmental samples:

May 1 2026 All systems go! RUSH can be done for most of the analysis we do.

Effective Oct 30, 2025 posting of reports to here MAY be delayed, way to many reports!

Drinking water samples:

May 1 2026 All systems go! Most drinking water analysis is 1 (one) day, unlike the local competition that is 4 days to 3 months!

Effective Sep 1 2025 only the first BACTERIA retest is no charge.

We DO NOT accept any samples on Saturday/Sunday.

WE ARE NOT DOCTORS, WE DO NOT KNOW WHAT TO TEST FOR YOU OR YOUR PETS HEALTH PROBLEMS.

We DO NOT DO or accept samples for PFAS/PFOS or Microplastics.

 Additional drinking water information is on the contact us page.

Click below for our current EGLE certificate.

GTA 2025 EGLE recert

***Michigan EGLE Certified for Microbiology (present/absent only), Nitrate, Nitrite, Arsenic, Copper, Lead***IF YOU ARE A WSSN SYSTEM THIS IS THE ONLY ANALYSIS AVAILABLE.