Before buying water-treatment equipment, learn how to choose appropriate testing, collect a reliable sample, read the results, and ask better questions.

Water stains, odors, tastes, and cloudiness can provide useful clues—but they cannot identify a contaminant or prove that water is safe. Learn what common symptoms may suggest and when to contact your utility or use certified laboratory testing.

Learn how to identify whether your home uses city water or a private well—and why your water source determines the right testing process.