https://pubmed.ncbi.nlm.nih.gov/35081754/
This was a quantitative, cross-sectional study.
Our study included 4042 U.S. adults, all 18 years or older.
We ran some statistical tests, called multivariable logistic regressions. This helped us figure out the odds of someone drinking more than 3 cups of tap water, bottled water, or total plain water per day, or drinking sugary drinks at least once a day, based on whether they used a water filter.
Using a water filter seems to encourage U.S. adults to drink more tap water and fewer sugary drinks. We also saw that filter use was higher among Hispanic adults, but lower for people with less education, lower incomes, or who weren’t married. While filter use connects to healthier drink choices, we should also think about things like source water quality, dental health, cost, and making sure filters are used correctly.

