Where can I get a good test to test drinking water from a well for chloroform...

Asked July 20, 2018, 3:13 PM EDT

Where can I get a good test to test drinking water from a well for chloroform bacteria ? If it is positive what is the remedy?

Franklin County Ohio

1 Response

Hello & thank you for your patience as we've reached out to other experts to answers to your questions. Dr. Karen Mancl is our Extension exptert but she is currently on leave and Dr. Brian Slater has just now returned to his office and answered your question. Here is is response:

Regarding testing, please see Karen Mancl’s OSU Extension information: https://ohioline.osu.edu/factsheet/aex-314

and Ohio Department of Health information:


Several tests should run to make sure that the results are reliable.

Some further detail is included at this website:


For interpreting the results of a well water test, the following is a useful online tool:


If the results indicate high levels of coliform bacteria, then disinfection is needed. The following ODH fact sheet has lots of useful information:

After shock chlorination, the well should be tested again. If the problem persists then measures will need to be taken to get to the source of the contamination. ODH provides a list of registered contractors who could help with this at:


Also, the Ohio Department of Health's Well Disinfection factsheet can be found here: https://www.odh.ohio.gov/-/.../factsheet/welldisinfectionfactsheetforhomeowners.pdf.

I hope that helps.


Brian K. Slater, PhD

Associate Professor and Associate Director
College of Food, Agricultural, and Environmental Sciences School of Environment and Natural Resources
210P Kottman Hall, 2021 Coffey Road, Columbus, OH 43210
(614) 292-7315 Office / (614) 581-9102 Mobile / (614) 292-7432 Fax
slater.39@osu.edu osu.edu

Again, we apologize for this delay, but we were only recently advised of Dr. Mancl's leave and we diligently worked to get you the best resource for your answer.

Kind regards,