
Below 15, the level that requires action
4 public water companies list Peosta as a place they supply. The biggest is Peosta Water Supply, with about 2,278 people. The highest latest result among Peosta's water companies is 12.4 parts per billion, at Lost Canyon MHP (Peosta). 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.