SAB Backs Cr6 Peer Review Floating Path To More Lenient Water Standard

EPA’s chartered Science Advisory Board (SAB) has provisionally approved a peer review report for the draft Integrated Risk Information System (IRIS) assessment of hexavalent chromium (Cr6), that suggested a path for the agency to avoid tight risk estimates that utilities have warned would drive impossibly strict drinking water limits. During a Sept. 22 SAB meeting, the board voted to approve the draft peer review report by its Cr6 panel, pending changes that appear to leave in place the draft’s most...