 Pretty easy. So the EPA puts out guidelines and standards. So, well, they did. They put out a guideline and standard regarding the PFAS and they have to 2027 to meet the mandate. Unless, you know, unless it changes. But that's again, you know, that's down from 17 part per trillion. That was an acceptable amount to down less than four part per trillion. And then what happened? Then we found out the EPA stated actually zero is safe.