Californians strongly support action by state and federal agencies to ensure that the water in our streams and the water we drink are free of dangerous contaminants, and that our precious wetlands are preserved. Unfortunately, the Trump administration and Congress propose to weaken federal Clean Water Act protections for those essential resources. But California regulatory agencies needn’t and shouldn’t wait for this federal rollback. They should instead take action proactively to use state law to ensure clean water and wetlands protections for all Californians.