EPA collected water samples from five retrospective case study locations in Colorado, North Dakota, Pennsylvania, and Texas. Samples were collected during multiple sampling trips beginning in fall 2011 and ending in spring 2013. Here are the results for the samples collected in the Raton Basin, Colorado.

Please read the guide to data reports to learn more about the contents and layout of the data report.

These data represent individual points in time. No inferences or conclusions can be drawn about whether these study sites may be associated with potential impacts of hydraulic fracturing on drinking water resources.

Data Reports

• Raton Basin - Round 1 - October 2011(1 pg, 158 K)
• Raton Basin - Round 2 - May 2012(1 pg, 168 K)
• Raton Basin - Round 3 - November 2012(1 pg, 166 K)
• Raton Basin - Round 4 - April/May 2013(1 pg, 158 K)