If I travel to Europe, how do I know if the local knows the water is safe to drink?<p>Unless you&#x27;re in Flint, or a paranoiac, tap water in the US is safe.  Period.<p>Flint&#x27;s problem is not endemic, it was isolated.  The article is really reaching - they cite 3 instances over ~15 years of problems in city water supplies.  In 2 of the 3 cases it was caught and rectified quickly - Flint is the exception.