Question

9/22 water pollution and the flint water
which is not one of the ways that drinking water is treated?
filtering out dirt and sediment
adding anticorrosive chemicals
treating with lead - removal filters
chlorination

Explanation:

Filtering out dirt and sediment, adding anticorrosive chemicals, and chlorination are common drinking - water treatment methods. While lead - removal filters can be used for specific cases, they are not a general step in the standard drinking - water treatment process for all water sources. Standard treatment focuses on broader contaminants and disinfection.

Answer:

Treating with lead - removal filters