WEF Discussions — Now on LinkedIn!

WEF is pleased to announce the creation of free LinkedIn groups associated with its technical discussion forum topics. Through these LinkedIn groups, members will be able to view and participate in discussions, as well as communicate with one another via direct messages. Share your experiences and knowledge, ask questions and respond to other discussions as frequently as you like!

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NPDES Permit Requirement & Corresponding Analytical Method for Pesticide
Posted: Friday, February 21, 2014 5:15 PM
Joined: 4/2/2012
Posts: 4

To my fellow colleagues, I would like to take a quick survey. Here are my questions:


In regards to pesticide monitoring requirements on your treatment plant effluent, does your NPDES permit(s) list specific analytical method? 

What is this analytical method being used? 

 If the permits allow an option to use any method under 40 CFR 136, is there a compelling reason for using the current analytical method? 

 Does any of you using the EPA method 625 or an approved modified version for pesticide monitoring?


Can you please provide me the lab contact info.?  



Posted: Wednesday, July 8, 2015 9:52 AM
Joined: 3/16/2012
Posts: 16

I have worked in a commercial laboratory in the past and I believe the most widely excepted method for Pesticides for Permit is 608, mainly because it's cheaper.

Permits in  my state do not list a certain method, but in the permit it states to use an approved method from 40 CFR 136.  625 is an approved method, but more expensive to use, normally.