Secondary Constituents
Secondary constituents are regulated in public drinking water. They are called "secondary," instead of primary, because they have no adverse health effects.
Topics Under this Category
Fluoride in Drinking Water: Is It Safe?
Answer copied by permission from the American Water Works Association's "Plain Talk About Drinking Water" (2001).
Answer copied by permission from the American Water Works Association's "Plain Talk About Drinking Water" (2001).