Study Suggests Hydraulic Fracturing Can Impact Surface Water Quality–

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Advocates opposing fracking, including OSFR’s Merrillee Malwitz-Jipson (far left) and then-Sen. Darren Soto (center) in Tallahassee. Photo by Jim Tatum

Advocates opposing fracking will read this title and go “Duh…………….!”  They have been saying precisely this for many years.  Saying it to county commissioners, legislators and anyone who will listen.

Now we see this in an industry-supported newsletter.

But there is more.

Also known for many years is this:  “Better and more frequent water measurement is needed to fully understand the surface water impact of unconventional oil and gas development,”  And that is because of the Halliburton Loophole.

Despite the widespread use of the practice, and the risks hydraulic fracturing poses to human health and safe drinking water supplies, the U.S. Environmental Protection Agency (“EPA”) does not regulate the injection of fracturing fluids under the Safe Drinking Water Act.

The oil and gas industry is the only industry in America that is allowed by EPA to inject known hazardous materials — unchecked — directly into or adjacent to underground drinking water supplies.

This exemption from the SDWA has become known as the “Halliburton loophole” because it is widely perceived to have come about as a result of the efforts of Vice President Dick Cheney’s Energy Task Force. Source: Earthworks

The excuse put forth in this legislation is that chemicals used by oil companies are industry secrets to be kept from competitors.  But the result is that we do not know what the oil companies are putting into the ground to threaten our aquifer and drinking water.

Maybe the authors of this study just needed a publication in their portfolio, but it is a hard stretch to classify their findings   as “new knowledge.”

Read the original article here at Oil and Gas Online.

Comments by OSFR historian Jim Tatum.
[email protected]
– A river is like a life: once taken,
it cannot be brought back © Jim Tatum


Study Suggests Hydraulic Fracturing Can Impact Surface Water Quality

August 19, 2021

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The estimated impact on water quality is more pronounced during the period when wells generate large amounts of flowback and produced water, and where water monitors are closest to wells. More data is needed to better understand the full extent of the impact.

Tens of thousands of hydraulic fracturing wells drilled over the past few years from Pennsylvania to Texas to North Dakota have made unconventional oil and gas production part of everyday life for many Americans. This raises questions about the impacts to local communities and human health. While some studies document that hydraulic fracturing can contaminate groundwater, new evidence shows the practice can also reduce surface water quality.

The study, released today in the journal Science, finds hydraulic fracturing is associated with small increases in salt concentrations in surface waters for several shales and many watersheds across the United States. The largest impacts occurred during the early phases of production when wells generate large amounts of flowback and produced water. However, even the highest levels were well below what the U.S. Environmental Protection Agency considers harmful.

“Our work provides the first large-sample evidence showing that hydraulic fracturing is related to the quality of nearby surface waters for several U.S. shales,” says Christian Leuz, a co-author of the study and the Joseph Sondheimer Professor of International Economics, Finance and Accounting at the University of Chicago’s Booth School of Business. “Though we estimated very small water impact, one has to consider that most measurements were taken in rivers or streams and that the average fracturing well in our dataset was not particularly close to the monitors in the watershed.”

Leuz and his co-authors, Pietro Bonetti from the University of Navarra and Giovanna Michelon from the University of Bristol, combined surface water measurements with more than 46,000 hydraulic fracturing wells to examine whether new drilling and development activities are associated with elevated salt concentrations (bromide, chloride, barium and strontium) in 408 watersheds over an eleven-year period. They found a very small but consistent increase in barium, chloride and strontium, but not bromide, in watersheds with new hydraulic fracturing wells.

Several findings support the connection between the elevated salt levels and the nearby hydraulic fracturing activities. Along with the timing of when the highest levels occurred, the salt concentrations were also more pronounced for wells in areas where the deep formations exhibited higher levels of salinity. Additionally, they were highest when observed within a year at monitoring stations that were within 15 kilometers and (likely) downstream from a well.

“Better and more frequent water measurement is needed to fully understand the surface water impact of unconventional oil and gas development,” says Bonetti, who notes that a lack of water quality data limited their analysis.

Hydraulic fracturing fluids contain chemical substances that are potentially more dangerous than salts. But they’re not widely included in public databases, making a large-sample statistical analysis of these possibly hazardous substances infeasible. Also, many monitoring stations in a watershed are not located close to wells or may be upstream from the well, likely depressing the magnitude of the estimates….

Source: Energy Policy Institute at the University of Chicago

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