
Below 15, the level that requires action
14 public water companies list Columbia Falls as a place they supply. The biggest is Columbia Falls's water department, with about 4,450 people. The highest latest result among Columbia Falls's water companies is 4 parts per billion, at Columbia Falls's water department. None of the 14 with results was above 15 at its latest test. 8 found too little lead to measure. 12 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.