Research, explainers, and practical guides that connect public water evidence to the questions households actually ask.
28 published articles6 disciplines180 cited source recordsLatest 2026-11-04
Radon is a radioactive gas that can dissolve into well water, mostly in granite areas. Most of the risk comes from breathing it as it leaves the water. How to test and treat it.
Arsenic in private wells usually comes from rock, not pollution, and you can't see, smell or taste it. How to test your well, read the result against the limit, and treat it.
Nitrate reaches wells from fertilizer, septic systems and manure, and it matters most for babies under six months. How to test every year, read the result and treat it.
The disinfectant that keeps waterborne disease rare also creates by-products. Here's how to think about that balance instead of fearing it.
A system can report 'below the action level' and your kitchen tap can still have lead. Here is how lead reporting actually works and what to do about it.
Journal analysis adds context; it does not replace a water-system report, source document, ranking methodology, or certified household test.