Bioassay / Whole Effluent Toxicity Testing

Alloway’s bioassay department produces quality data you can trust. With over 40 years of experience providing whole effluent toxicity testing, Alloway serves numerous municipalities and industries throughout Ohio and the surrounding states. All biomonitoring is performed in accordance with EPA methods.


Chronic and definitive acute whole effluent toxicity testing

Acute toxicity screening

Biomonitoring required for National Pollution Discharge Elimination System (NPDES) evaluations and compliance

Toxicity Identification Evaluations (TIE)

Assistance with Toxicity Reduction Evaluations (TRE)

Composite sampling

Sample pick-up

In addition to toxicity testing, Alloway is one of the few laboratories that can assist permittees with the general chemistry analyses that should accompany every bioassay sample. The Ohio EPA guidance document for biomonitoring requires permittees to collect additional aliquots of sample each day to perform general chemistry analyses. Not only does the analysis of your general chemistry help you stay in compliance with the EPA’s requirements, it can also help you identify the sources of contamination in the event toxicity is detected.

For a copy of the Ohio EPA Guidance for Biomonitoring, please reference the below link:

For all of our service offerings, Alloway is committed to exceeding customer expectations. So whether you need wastewater chemistry or bioassay testing, Alloway is your one-stop shop for all of your analytical needs. Contact us today for a quote!