Ingesting contaminated water may cause gastrointestinal illness and infection.

Ensure your drinking, agriculture and recreational water is free of  bacteria like total coliforms and E. coli with ETL's Certified microbiology testing.

Microbiology Services

ETL is accredited by the Michigan Department of Environment, Great Lakes, and Energy(EGLE) to identify the following types of microorganisms.

Total Coliform and E. Coli (via Standard Methods, 22 nd Edition, Method 9223B, Colilert & Colisure)

A simple test to determine if bacteria exists in a sample of water.

Enumeration of Total Coliform and E. Coli (via Standard Methods, 22 nd Edition, Method 9223B, MW/QT, Colilert)

A more in depth test to determine the estimated number of bacteria coliforms within a sample, and by proxy and a larger body of water.

Heterotrophic Bacteria (via the SimPlate Method)

This test is only for enumeration/ quantifying the bacteria present. The type of bacteria is not identified.

Why test your water?

Water is an essential to all life on the planet, as is bacteria. While most bacteria is harmless or even helpful, there are a few that can cause major health concerns when they exist in drinking, agricultural, or recreational water supplies. While it's impossible to test for all disease causing organisms, there are a few bacteria that indicate the presence of a dangerous pathogen, and these we can be proactive and test for.
Environmental Testing Laboratories can help ensure your water is safe by providing two of the most common microbiology water testing methods.

  • Total Coliform testing indicates the total estimated number of bacteria in a sample of water- while this sample does not distinguish good from bad bacteria, the total number of coliforms found can indicate contamination if past a certain threshold.
  • E.coli testing can be performed in two different methods :a simple test to determine if E.coli is within the water sample, and another that will quantify the amount of E.coli within a sample.

Sampling Information

You Got Samples, Now What?

Sample Mailing and Delivery

Samples may be mailed or hand-delivered. A Chain of Custody (CoC) may be filled out in the lab upon your arrival or downloaded here. If a sample is mailed, a CoC must be attached with the proper information and signatures.  Please contact us for containers to take microbiology samples.

Mail/Drop Off Location

You may mail or deliver your package to :

37575 W Huron River,
Romulus, Michigan 48174

Did you know that ETL has Dropboxes throughout Metro Detroit?

Payment Information

Payment may be cash, check, or credit. Please make checks out to Environmental Testing & Consulting, Inc. Credit card payment may be taken over the phone. Please make a note on your CoC if you intend on using a credit card upon receiving your report.