Guides
Water Quality Guides
Start with the problem, not the product. Each guide is built around a real household decision — filtration, contaminants, testing, or understanding what official data actually means.
Filtration
5 guidesBest Filter for Lead in Tap Water
Not all water filters remove lead. Learn when reverse osmosis, certified carbon filters, or testing make the most sense for lead at your tap.
Best Filter for PFAS in Drinking Water
Learn which home filtration options are most credible for PFAS, when reverse osmosis wins, when carbon can help, and what to verify before buying.
Reverse Osmosis vs Carbon Filter: Which Is Better for Tap Water?
Reverse osmosis and activated carbon solve different water problems. Compare contaminant removal, cost, maintenance, and home fit before you choose.
Whole-House Filter vs Under-Sink Filter: Which One Do You Need?
Whole-house and under-sink filters solve different problems. Learn when each setup makes sense for drinking water, chlorine, lead, PFAS, and home-wide issues.
What Type of Water Filter Do You Need for Your Problem?
Start with the water problem, not the product category. Match lead, PFAS, nitrates, chlorine, hard water, and more to the right kind of filtration.
Contaminants
1 guideTesting
1 guideUnderstanding
3 guidesWhat Does Lead in Tap Water Actually Mean?
Lead in tap water usually comes from plumbing, not the source water. Learn what action levels, first-draw samples, and household exposure really mean.
How to Read a Water Quality Report Without Getting Lost
Confused by your annual water quality report? Learn what the numbers, acronyms, and contaminant tables actually mean in plain English.
Does Boiling Water Remove Lead, PFAS, or Nitrates?
Boiling helps with microbes, not most chemical contaminants. Learn why boiling does not remove lead, PFAS, or nitrates and what to do instead.
Looking for Utility or Contaminant Data?
These guides cover general household decisions. For utility-specific data and official government records, use the directory.