
Below 15, the level that requires action
41 public water companies list Helena as a place they supply. The biggest is Helena Water, with about 32,091 people. The highest latest result among Helena's water companies is 10 parts per billion, at Western Skies Mobile Ct. None of the 40 with results was above 15 at its latest test. 13 found too little lead to measure. 1 has no lead test results on file. 35 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.