Did you know that there is “hard” and “soft” water? Many cities have hard water, which has a high mineral content because of over-processing or pollutants and debris from the environment, which could irritate and inflame your skin, leaving it more susceptible to breakouts. Soft water in contrast has been treated with sodium ions, leaving it with low levels of impurities, minerals, and ions. A good way to judge if you’re bathing with hard or soft water is to put them to the soap lathering test: it’s easier to get a good, sudsy lather with soft water than it is with hard water.
If you suspect the cause of your acne is the water, get a shower filter or save a jug of boiled water, which has been cooled down, especially for facial cleansing. Boiling water dissolves ions, softening hard water.