
Below 15, the level that requires action
5 public water companies list Chautauqua as a place they supply. The biggest is the Chautauqua Utility District, with about 9,000 people. The highest latest result among Chautauqua's water companies is 7.6 parts per billion, at the Chautauqua Utility District. None of the 5 with results was above 15 at its latest test. 4 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.