Editor’s note: Cleaner Classroom is an online series focused on the fundamental functions of cleaning professionals and the basic tools used to clean, inspect and rehabilitate water, sewer and drainlines.Everyone in the cleaning business is familiar with water jetters, even if you don’t own or operate them. Jetters provide a powerful sewer and drain cleaning option, but they’re not all the same, and you need to have a good understanding of their features and functions before making a purchase.The concept is simple: A powerful pump injects a high-pressure stream of water into a pipe via a heavy-duty hose with a
