CDPH is required to set an MCL as close as possible to the public health goal (PHG) established by the California Environmental
Protection Agency (EPA) Office of Environmental Health Hazard
Assessment (OEHHA) to the extent technologically and economically feasible. OEHHA established the Public Health Goal for Cr(VI)
in 2011 at 0.02 µg/L. A final decision and enforceable MCL is
expected to be established in 2014.
Meanwhile, the U.S. EPA has posted a new schedule for its Cr(VI)
toxicology review. The first step, hazard identification, is sched-
uled to be completed by March 2014. While the schedule does
not include a date for a final toxicological summary, a draft will
be ready for public comment by September 2015.
To help water utilities prepare for these regulatory actions,
Water Research Foundation (WRF) has funded and is currently
supporting numerous initiatives to advance the science surrounding Cr(VI). The most important resources finalized in 2013
will help water systems and other interested parties understand
the potential costs associated with Cr(VI) regulations. The Cost
Estimation Tool for Cr(VI) Removal From Groundwater is an online
tool that can help drinking water systems estimate a range of
State and federal agencies took significant actions in the last year to regulate the allow- able levels of hexavalent chromium in drinking water. On August 23, 2013, the California Department of Public Health (CDPH) proposed a maximum contaminant level (MCL) for hexavalent chromium [Cr(VI)] of 0.010 milligrams per liter (equivalent to 10 µg/L).
Treatment Costs and