North Carolina state water quality standards require the protection of all aquatic species from the effects of pollution or other man-induced detriment. Though many numeric water quality standards are based on the measured effects of individual chemicals, measurements can be made of only a small percentage of the chemicals in production today and those measurements cannot predict the effects of complex chemical mixtures. In order to evaluate these biological effects, aquatic toxicology tests are utilized by the Aquatic Toxicology Branch (ATB), allowing for the determination of the combined effects of all constituents of a solution.

ATB Programs and Information


Information for Permitted Facilities


Updated Whole Effluent Toxicity Dual Reporting Requirement 


Information for Certified Biological Testing Laboratories


NC Whole Effluent Biological Certification Rules, 15A NCAC 02H .1100-.1111


ATB Staff Contacts:     Main Number   919-743-8401

1621 Mail Service Center,Raleigh, NC 27699-1621

Cindy Moore Branch Supervisor 919-743-8442
Molly Nicholson

Environmental Specialist II 

Compliance and Customer Service Specialist

Madison Myers

Environmental Specialist II

Lab Certification and QA/QC Specialist

Anna Ward Environmental Specialist I 919-743-8422
Savannah Seeber Environmental Specialist I 919-743-8441