
Below 15, the level that requires action
4 public water companies list Peru as a place they supply. The biggest is the Peru Water District, with about 2,700 people. The highest latest result among Peru's water companies is 9.2 parts per billion, at the Peru Water 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.