Florida Drinking Water Operator "B" Practice Test

What is the main purpose of filtering a water sample before analysis?

1. To remove large particles

2. To improve taste

3. To reduce odor

4. To prevent corrosion

The correct answer is: To remove large particles

Filtering a water sample before analysis serves primarily to remove large particles from the sample. This process is crucial because the presence of larger particles can interfere with the analytical techniques used to assess water quality. Particulate matter can lead to inaccurate readings from instruments, obscure the detection of dissolved substances, and complicate the interpretation of the results. By ensuring that the sample is free from sediment, algae, and other significant particulates, the analysis can focus on the dissolved contaminants and parameters that are of interest, leading to more reliable and valid results. While improving taste, reducing odor, and preventing corrosion are important aspects of water treatment and management, they do not directly relate to the initial filtration process before analytical testing. These factors typically come into play later in the treatment process or through specific chemical applications rather than through the physical act of filtering a sample.