When operators are faced with licensing exams, they sometimes struggle with test anxiety because they don’t fully understand how to properly study and prepare for exam questions. Here we take a look at a sample water treatment licensing exam question, how to solve the problem, and the correct answer.Sample Question:
You are dosing fluoride in a finished water supply using sodium fluoride, which is 97 percent pure. The treatment rate is 32 mgd and the natural fluoride in the untreated water is 0.4 mg/L. If you aim to have a finished water concentration of 0.9 mg/L, what is your dose? The
