
Below 15, the level that requires action
7 public water companies list Casper as a place they supply. The biggest is Casper's water department, with about 59,000 people. The highest latest result among Casper's water companies is 2 parts per billion, at Vista West Water Company. None of the 7 with results was above 15 at its latest test. 4 found too little lead to measure. 5 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.