UC Davis Report for the SWRCB SBX2 1 Report to the Legislature
Prepared by:
Thomas Harter and Jay R. Lund
(Principal Investigators)
Jeannie Darby, Graham E. Fogg, Richard Howitt, Katrina K. Jessoe, G. Stuart Pettygrove, James F. Quinn, and Joshua H. Viers
(Co-Investigators)
Dylan B. Boyle, Holly E. Canada, Nicole DeLaMora, Kristin N. Dzurella, Anna Fryjoff-Hung, Allan D. Hollander, Kristin L. Honeycutt, Marion W. Jenkins, Vivian B. Jensen, Aaron M. King, George Kourakos, Daniel Liptzin, Elena M. Lopez, Megan M. Mayzelle, Alison McNally, Josue Medellin-Azuara, and Todd S. Rosenstock
With project management support from
Cathryn Lawrence and Danielle V. Dolan
Center for Watershed Sciences • University of California, Davis
Groundwater Nitrate Project, Implementation of Senate Bill X2 1
Prepared for California State Water Resources Control Board • March 2012
Brief (English / Español) (2 pages)
Executive Summary (8 pages)
Main Report (80 pages)
2017 Update: Nitrogen Loading to Groundwater in the Central Valley (CDFA/FREP, 470 MB) (click here for a 22 MB version without map appendices).
Technical Report 1 - Project and Technical Report Outline (Version July 2012)
Technical Report 2 - Nitrogen Sources and Loading to Groundwater (Version July 2012)
Appendix - Appendix Figures to Technical Report 2 (Version July 2012) - 84 MB (large file!)
Technical Report 3 - Nitrogen Source Reduction to Protect Groundwater Quality (Version July 2012)
Technical Report 4 - Groundwater Nitrate Occurrence (Version July 2012)
Technical Report 5 - Groundwater Remediation and Management for Nitrate (Version July 2012)
Technical Report 6 - Drinking Water Treatment for Nitrate (Version July 2012)
Technical Report 7 - Alternative Water Supply Options for Nitrate Contamination (Version July 2012)
Technical Report 8 - Regulatory and Funding Options for Nitrate Groundwater Contamination (Version July 2012)
Version Notes:
The July 2012 versions of Technical Reports 1 - 8 supercede the March 2012 versions. The updated versions feature a cover page on each Technical Report, corrections of typographical and grammatical errors, and minor clarifications in the text of the Technical Reports. A separate Appendix compendium has been added to Technical Report 2. No changes have been made to the factual findings of the Technical Reports originally published in March 2012.
Data:
- Sources of nitrate (Dzurella et al., 2012, Technical Report 2)
- Water quality data (Dylan et al., 2012, Technical Report 4): GeoTracker GA
Related Links and Literature:
- State Water Resources Control Board (SWRCB) SBX2 1 Nitrate Study Website
- Anton et al., 1988, Nitrate in Drinking Water, Report to the Legislature, SWRCB.
- Staff, January 2013, California Communities That Rely on Contaminated Groundwater, Final Report to the Legislature, SWRCB.
- Tulare County SBX2 1 Implementation Project and Final Report
Key Recent Nitrate Studies:
- Science Advisory Board, 2011, Reactive Nitrogen in the United States: An Analysis of Inputs, Flows, Consequences, and Management Options, U.S. Environmental Protection Agency.
- United Nations High Commissioner, Drinking Water and Sanitation in the United States, United Nations 2011.
- Sutton et al., 2011, The European Union Nitrogen Assessment.
- Tomich et al., 2012, The California Nitrogen Assessment.
- Dubrovsky et al., 2010, Nutrients in the Nation’s Streams and Groundwater, 1992–2004. US Geological Survey, Circular 1350.
- United Nations Food and Agriculture Organization (FAO), 2012, Report on the Future of Sustainable World Food Production.
Related Links:
- Thomas Harter (Video) - Beneath the Tulare Basin: A Tour of Groundwater and the Many Paths of Water to Wells.
- California Department of Public Health Factsheet on Nitrate
- California Department of Public Health Nitrate Webpage and Links
- California Department of Public Health Information on POU/POE Treatment Systems
- Environmental Protection Agency Information on Domestic Wells
- Multimedia: Coping with Nitrate Contamination (California Watch)
- Healthy Crops, Safe Water Program, University of California