
Below 15, the level that requires action
4 public water companies list Alpine as a place they supply. The biggest is Alpine's water department, with about 1,300 people. The highest latest result among Alpine's water companies is 6 parts per billion, at the North Alpine I&S District. None of the 4 with results was above 15 at its latest test. 3 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.