What is the current status of the Napa River for impairment under the Clean Water Act?

The Napa River is designated under the Clean Water Act as impaired by nutrients, pathogens, and sediment. As of October 2020, the State Water Resources Control Board and San Francisco Bay Regional Water Quality Control Board have approved delisting non-tidal areas of the Napa River for nutrient impairment.

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1. Is groundwater quality currently being monitored?
2. Is there a link between groundwater and surface water, and if so, how will it be managed?
3. What is a water budget?
4. What is irrigation system efficiency and what factors affect the efficiency?
5. What is the current status of the Napa River for impairment under the Clean Water Act?
6. How is climate change taken into account in considering and planning for groundwater sustainability?
7. Return to the Groundwater FAQ page