Site specific groundwater standard for perfluorinated compounds

There are many unknowns regarding perfluorinated compounds, but due to research efforts nationwide, the science associated with these compounds is rapidly evolving.  Given the number of unknowns related to perfluorinated compounds at this time, Colorado is taking a stepwise approach to regulating these compounds:
  1. Site-Specific Groundwater Quality Standard: On April 9, 2018, the Water Quality Control Commission voted unanimously to adopt a site-specific groundwater quality standard of 70ppt for combined PFOA and PFOS.  The intent of this standard is to provide a cleanup goal for the contaminated aquifer in El Paso County, while also working to avoid additional contamination of this aquifer, which serves as a drinking water source for surrounding communities (see the map to the right). The groundwater quality standard becomes effective on June 30, 2018.
  2. PFOA and PFOS Hazardous Constituent Listing: On February 20, 2018, the Solid and Hazardous Waste Commission listed PFOA and PFOS as Hazardous Constituents in Colorado Hazardous Waste Regulation. This listing applies statewide and will help us to gain a better understanding of the scope of perfluorinated compounds issues across the state.  
  3. Assess the need for statewide standards: Based on continued evaluation of the scope of perfluorinated compounds issues across the state, we continue to assess the need for statewide standards associated with PFOA, PFOS, and other perfluorinated compounds.  This continuing assessment also is being informed by the rapidly evolving science related to these contaminants.