7873fa0f_Board_Meeting_Minutes_1_10_01__Response__abridged_
[Question] Does any Y-12 wastewater containing mercury cycle through the citys treatment plant? [Response (abridged)] 
In the early 1990s there was a concerted effort to identify wastewater sources contaminated with mercury, and its my understanding that any discharges to the citys system are now below allowable limits.
Board Meeting Minutes 1/10/01
Response (abridged)