Certified Microbiological Laboratories

A certified laboratory must be used for any testing required by the department's Public Drinking Water Branch. Analysis of water samples from private residences or private wells does not have to be done by a certified laboratory. There are other laboratories capable of performing analyses of private water samples in addition to the laboratories included on this list. The other laboratories have chosen not to go through our certification process, but may produce equivalent results if they have adequate quality assurance or quality control in place.

*For a list of chemical laboratories, visit Certified Chemical Laboratories.

Laboratory Certification

For information about how to become a certified microbiological laboratory, visit the Missouri Department of Health and Senior Services' Certifications webpage. You may also contact the Missouri Department of Health and Senior Services at 573-751-3334 or email laboratorycertification@health.mo.gov.

Request Additional Sampling Bottles

Bacteriological water analysis sampling bottles can be requested two ways:

1. Enclosed postcard that comes with the sample bottles
2. Online Sampling Bottles Request Form

Search Current List of Microbiological Laboratories

The below list identifies all laboratories certified by the department to perform drinking water analyses for compliance purposes in the State of Missouri. Laboratories listed as commercial do perform compliance analyses for hire. It is suggested to contact multiple labs for the best pricing for the testing parameters desired.

Download spreadsheet of all Laboratories