āāFigure 1 shows the rate of occupational heat-related illness (HRI) emergency department (ED) visits inā California by county during 2016-2021. Counties with the highest average yearly rates of ED visits for occupational HRI (greater than 15 ED visits per 100,00 workers) during 2016-2021 are labeled: Imperial County has a yearly rate of 33.5 visits per 100,000 workers, followed by 22.3 in Madera, 19.0 in Shasta, and 16.2 in Kings. ā
*We labeled counties with rates of HRI that were more than 15 per 100,000 workers. North to South, the counties are Shasta, Madera, Kings, and Imperialā