Abstract: On January 4, 2013, an employee, of C. Overaa & Co., was working at a sewer and water treatment plant. He was using a high pressure washer (Turbo Blaster) in an attempt to clear the clogged hose of a wet/dry vacuum (shop vac). He inserted the tip of the high pressure washer into the vacuum hose. When he squeezed the pressure washer trigger, the water force caused the pressure washer tip to withdraw from the clogged hose. As the pressure washer tip cleared the end of the hose, the water pressure stream struck the employee's wrist. The employee required hospitalization and treatment for systemic poisoning.