To the topic of this article, it is largely due to government that we aren't still putting lead in our gasoline, paint and water pipes; most of the issue now is

To the topic of this article, it is largely due to government that we aren't still putting lead in our gasoline, paint and water pipes; most of the issue now is in the deteriorating housing stock that our (free-market-driven) development pattern (money goes into sprawl, leaving older, decaying housing stock in the hands of people who can't afford remediation, ditto at a local tax base level) hasn't updated.