DUWL stands for dental unit waterlines, which is an integral part of any dental office. Though it is a crucial component, many are unaware of its existence until something goes wrong. To look for synonyms for the word DUWL, phrases like "dental tubing," "waterline system," "dental water system," or "dental unit water system" can be used. In addition to these, terms like "dental unit", "water supply system", "water purification system", and "water filtration system" are also closely associated with DUWL. It is essential to maintain and clean the DUWL regularly to prevent microbial growth, which can cause an array of problems for both the patients and the staff.