Determination of Regional Reference Conditions, Tiered Aquatic Life Applications and Inter-Regional Calibration of Community Assessment Methods
As directed by the Clean Water Act, the US EPA has set a priority for the development of biological water quality criteria. Biological criteria are valuable because they directly measure the condition of the resource at risk, detect problems that other methods may miss or underestimate, and provide a systematic process for measuring progress resulting from the implementation of water quality programs.
The initial phase of this program directs State adoption of narrative biological criteria as part of State water quality standards. CPCB is assisting the US EPA Region 7 Biocriteria Workgroup in this effort. When implemented, biological criteria will expand and improve water quality standards programs, help identify impairment of beneficial uses, and help set program priorities.
Visit the Biological Criteria Workgroup's webpage for documents, data, and presentations.