Here’s the test being done and the results shown. Rain containing 5 times normal background level of radiation means health implications for millions of Californians who collect the stuff for drinking, washing and cooking.
They better start using half micron filters on all of it, and clean them out every month with distilled water. Or use distilled water.
Plants and farm animals will be accumulating contamination. They’d better grow food inside biodomes, poly-tunnels, greenhouses etc and irrigate with ground water.