Water-drinkers are those who consume water in large amounts. There are various synonyms to describe people who drink lots of water. "Aquaholic" is an informal term referring to individuals who are addicted to drinking water. "Hydrate-hounds" are those who are passionate about keeping themselves well-hydrated all the time. "Aqua-fanatics" are another term expressing an enthusiast for consuming water. "H2O heads" is another fun synonym that describes those who have an intense affinity for drinking water. Other words like "water worshipper" or "thirst quencher" can also be used to describe people who drink water regularly or in large quantities. In conclusion, the use of synonyms adds creativity to our language and makes it more enjoyable.