A workplace patient exposed to a chromium additive in pool water developed nausea, vomiting, diarrhea, oliguria, and acute kidney injury. He was diagnosed with acute kidney damage, third degree skin burns and gastroenteritis. Treatment included antioxidant stress management, hemodialysis, and surgical debridement with skin grafting. Renal biopsy showed acute interstitial nephritis. Confirmation of the diagnosis of chromium poisoning was based on anamnesis and monitoring of blood chromium levels. After a year, the patient's condition gradually improved. The case highlights the importance of a clear history of high heavy metal exposure for the diagnosis of acute kidney injury. Early active treatment improves the success rate of rescue.