“California’s Sustainable Groundwater Management Act was designed to prevent significant and unreasonable chronic lowering of groundwater levels across the state, among other undesirable effects. Yet implementation often does not protect shallow wells. This report examines public drinking water supply well vulnerability under the Sustainable Groundwater Management Act. It focuses on wells and water systems in the San Joaquin Valley due to the area’s social and economic significance, high concentration of water-related challenges, and availability of developed groundwater sustainability plans.
The report finds that 503 of the 1,200 public supply wells in the region, or 42%, are likely to be partially or fully dry at the minimum thresholds established in the region’s sustainability plans. It includes recommendations to support small water systems and domestic wells and improve the resilience of groundwater sustainability Plans, in line with the state’s Human Right to Water. ... ”