A Bay Area representative and other federal lawmakers mounted a push on Tuesday for action on groundwater rise, which they warned will worsen flooding across the United States in the decades to come, with the potential to damage critical infrastructure, harm freshwater supplies and spread toxic chemicals into communities. … U.S. Reps. Kevin Mullin, D-San Mateo, and Andrew Garbarino, R-N.Y., introduced legislation in June that would set aside $5 million over the next year for the United States Geological Survey to study and map groundwater rise nationally through 2100. … They held a press conference on Tuesday in South San Francisco in San Mateo County — considered the most at-risk county to sea level rise in California — to push for Congress to advance the legislation, which they dubbed the Groundwater Rise and Infrastructure Preparedness Act of 2025.

Other groundwater and sea level rise news:

• Woods Hole Oceanographic Institution: New paper reveals global threat of salt contamination to water supplies in tidal rivers, threatening critical infrastructure
• Western Water Notes: Q&A: Groundwater loss on a global scale
• FOX10 (Phoenix, Ariz.): Arizona groundwater levels are in jeopardy, research shows​