Chromium-6, a chemical compound known to cause cancer, has been detected in localized valley drinking water supplies, triggering notification letters to regional consumers. While local water officials stress that the trace amounts discovered do not constitute an emergency or an immediate public health hazard, the recorded concentrations do breach California’s newly established, highly aggressive state water quality benchmarks. Residents across the Coachella Valley recently received informational letters alerting them that water testing conducted in May 2025 found levels of hexavalent chromium, commonly referred to as Chromium-6, above the state’s drinking water safety threshold. … California’s new maximum contaminant level is 90% more stringent than the national restriction.

Other drinking water news:

• FOX21 (Colorado Springs, Colo.): Colorado City receives $15.9M water treatment grant
• John Fleck at Inkstain: Blog: Feds stop paying to monitor Santa Fe drinking water source for Los Alamos contaminants