It's significant that there is this advice, and it supports the point of the article, but this is really insufficient. If you can't be sure of the water quality at the tap (as parent notes, different from the quality at the plant where the utility measures contaminant levels), then it's best to use a filter that removes metals (as well as biological contaminants).
Also people should be aware: the government somehow allows pipes and fittings to be sold as "lead free" when in reality they contain up to a few percent of lead.
Be careful with filters-the main issue with lead is that it leaches from pipes and/or solder. Most of the cases I am aware of in modern (post 1970s) US homes were related to whole house reverse osmosis systems, because the ion-free water had so much more capacity for free metal ions.
If you have hard water, it is almost impossible to persuade lead out of the pipe into solution. If you do want to use a filter, make sure you have an at the tap point filter as well.
Also people should be aware: the government somehow allows pipes and fittings to be sold as "lead free" when in reality they contain up to a few percent of lead.