
Below 15, the level that requires action
4 public water companies list De Witt as a place they supply. The biggest is De Witt Water Supply, with about 5,514 people. The highest latest result among De Witt's water companies is 3.4 parts per billion, at De Witt Water Supply. 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.