Lead screenings for children plummeted last spring, and stay-at-home orders may have increased household exposure to the toxic metal.
Testing found high levels of arsenic, lead and cadmium in some ingredients, congressional investigators said.
The E.P.A. will tout a new rule on testing lead in drinking water as President Trump’s latest environmental achievement, but water experts see only modest improvements at best.
The settlement still needs federal court approval, but Flint residents were being cautiously optimistic after the drawn-out crisis: “I just want it to be over.”
Residents were left ill and relying on bottled water. Health officials said the effects on children were most concerning.
“Children around the world are being poisoned by lead on a massive and previously unrecognized scale,” according to the study, a collaboration of UNICEF and Pure Earth, an advocacy group.
Bees can act as tiny pollution detectors, say researchers, who found higher but still safe lead levels in honey gathered downwind of the cathedral.