
Below 15, the level that requires action
4 public water companies list Egan as a place they supply. The biggest is Big Sioux Community Water, with about 5,800 people. The highest latest result among Egan's water companies is 1 parts per billion, at Big Sioux Community Water. None of the 4 with results was above 15 at its latest test. 1 found too little lead to measure. 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.