Pesticide Water Quality Criteria Development

The Central Coast Water Board contracted with the University of California Davis (UC Davis) to derive water quality criteria for neonicotinoid insecticides. Draft criteria derivation reports for clothianidin and thiamethoxam and a final report for imidacloprid are available on this website, see below.

Under previous contracts with the Central Valley Water Board, UC Davis developed a methodology to derive water quality criteria for pesticides and used this methodology to derive water quality criteria for 14 other pesticides. Links to those pesticide criteria derivation reports and the methodology used to derive them are available at the Central Valley Water Board website.

UC Davis Clothianidin Water Quality Criteria

  • Water Quality Criteria Report for Clothianidin – This final project report describes the acute and chronic water quality criteria derived by UC Davis for the insecticide clothianidin. This report is available upon request.
  • Responses to Public Comments and Peer Reviews – This document contains the public comments and peer review comments of the Draft clothianidin Criteria Technical Report as well as the UC Davis responses to those comments. This document is available upon request.

UC Davis Thiamethoxam Water Quality Criteria

  • Water Quality Criteria Report for Thiamethoxam – This final project report describes the acute and chronic water quality criteria derived by UC Davis for the insecticide thiamethoxam. This report is available upon request.
  • Responses to Public Comments and Peer Reviews – This document contains the public comments and peer review comments of the Draft Thiamethoxam Criteria Technical Report as well as the UC Davis responses to those comments. This document is available upon request.

UC Davis Imidacloprid Water Quality Criteria

Scientific Peer Reviews

Public Comments

Please direct questions about the pesticide water quality criteria to Peter Meertens, Environmental Scientist, at (805)549-3869 or Peter.Meertens@waterboards.ca.gov.

To be notified of updates and meetings please subscribe to the Pesticide Water Quality Criteria Development subscription list.