A final EPA rule should be published by the end of the year that defines how plumbing fixture makers and importers can prove the lead in their consumer products meets a new, lower standard that Congress set in 2011, a senior agency water official said Sept. 5.

The rule (RIN: 2040-AF55) will define what companies must do to demonstrate they are making or importing plumbing fixtures for consumers that meet the “lead-free” 0.25% standard that Congress set in the Reduction of Lead in Drinking Water Act, said Eric Burneson, director of standards and risk management in the...