Water Lab

We are now open to other water systems/communities for testing! The lab will be operating through EJ Water's contract service company, Cooperative Advantage. EJ has brought their testing in-house and now we're looking forward to helping communities by making our Water Lab service available to them.

Routine Coliform Samples

The EPA requires water systems to routinely test for coliform/e. coli in their water. Routine samples are pulled from raw water, finished water, and water that is in distribution.

Boil Orders

Precautionary boil orders are announced when pressure in water lines is reduced. Boil orders can be lifted after a satisfactory sample is returned, which confirms no pathogens entered the water line.

New Construction

As of 2019, new construction samples may be analyzed using the presence/absence method (instead of the membrane filtration method). New construction samples require a permit number and two samples (taken more than 24 hours apart).

We simplify the water testing process for you!

How It Works:

1. Use a lab-certified sample bottle to collect sample (We will provide the bottles for you).

2. Complete analysis form. 

3. Receive results the next day.

Contact us today to receive sample bottles and forms!

Drop-Off Schedule

Monday - Thursday | 8am-4pm | 108 S Main St, Dieterich, IL 62424

After Hours: At the moment we aren't offering after-hours testing. We plan on offering it in the near future. 


Our team of water analysts are highly trained to analyze water samples for microbiological testing and the presence or absence of Coliform and E.coli. 


Water Lab Inquiry Form

Use this form to tell us about your community and your water testing needs.