The fears of "lead" are as silly as that of "global warming". "Scientists" live by proclaiming the sky is falling so they can obtain federal grant money to "study" the possible problem. Once they have committed themselves to a postition it would damage their credibility to admit they were wrong so they tend to form protective circles around themselves. Remember, it wasn't only the church leaders that loudly protested against the round earth theory!
But, no gov. agency ever lost anything from being silly. Taking steps such as a state wide lead ban is an ideal way to "prove to the citizens" they are on the job, dilegently protecting folks. And the little animals of the air and fields too. All at state expense of course. But, it beats working for a living, right?