Re. Czech Republic -- nothing has changed, in the sense that drinking tap water was perfectly safe ten years ago, as it is now.<p>I suppose that demonstrates the dangers of your &quot;ask some local&quot; approach :)<p>Though the safety of tap water in CZ is well known, and has been well known for decades, and any local would tell you as much. So I&#x27;m not sure where that came from. Perhaps some temporary local incident?<p>Even Google may be a safer source of information on tap water quality.