Y’all actually need to read the article before commenting:
One of the major initial concerns—the wastewater’s mercury content—stems from what experts believe may be egregious typos within SpaceX’s records. Lab reports indicate polluted waters contained 0.113 μg/L of mercury, while subsequent summaries appear to misplace the decimal point to show 113 μg/L. If the former measurement is accurate, then Starship’s wastewater contains roughly 1/17th the legal mercury limit.
SpaceX has done some shady shit regarding their environmental practices, but this claim about mercury just ain’t it. Some of the comments further down go into more detail.