NC Department of Environment and Natural Resources
Water Quality - Aquatic Toxicology Unit
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Water Quality
Aquatic Toxicology Unit (ATU)Unit Main Number: 919-743-8401ATTENTION: REVISED ATU CRITERIA & PROCEDURESView documents here! About the Aquatic Toxicology Unit (ATU)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 Unit (ATU), allowing for the determination of the combined effects of all constituents of a solution. ATU Programs and InformationNPDES compliance and enforcement Information for Permitted FacilitiesFacility Whole Effluent Toxicity (WET) testing guidance and reporting forms Information for Certified Biological Testing LaboratoriesWhole Effluent Toxicity (WET) testing procedures
ATU Staff Contacts:
Environmental Sciences Section 1621 Mail Service Center Raleigh, NC 27699-1621 919.743.8400 |
