Posts Tagged ‘water expert’

Additional WVU testing confirms acceptable levels of total trihalomethane in drinking water in Southwestern Pennsylvania

Written by Andrew Stacy on . Posted in News, Press Release

MORGANTOWN, W.Va. – Additional testing by the West Virginia Water Research Institute (WVWRI) shows acceptable levels of total trihalomethane (THM) in drinking water at Beth Center Elementary and High Schools in Washington County, Pennsylvania. Those and nine other locations throughout Washington and Greene counties were sampled in February with similar results.

Last November, WVWRI tested samples collected at Beth Center Elementary and Beth Center High School that showed high THM levels.

Total THMs are regulated in drinking water supplied by water authorities. They form when water is chlorinated to control microbial pathogens. Chlorine reacts with methane in the water which allows the halogens-chloride and bromide to attach and form THM. There are four THMs with varying amounts of chloride and bromide.

The Federal Safe Drinking Water Act regulates the amount of total THM delivered to customers to 80 micrograms/liter when averaged over a year. Pennsylvania regulations require sampling for THM every three months and compliance is based on the average of the four most recent quarterly samples. So, while the November readings were reason for concern, further sampling was needed to determine whether an immediate threat existed.

The WVWRI, with support from the Colcom Foundation, conducted a one-month long effort to determine THM levels in five water systems along the Monongahela River from Brownsville, Pennsylvania to the West Virginia state line. Included were: Pennsylvania American Water at Brownsville, Charleroi, Tri-County, Southwestern Pa. and East Dunkard Water Authorities.

Dr. Paul Ziemkiewicz, director of the WVWRI at West Virginia University said four weekly samples were taken in February 2016 in the Monongahela River upstream of the water system intakes and at 11 locations throughout the distribution networks including the Beth Center Elementary and High Schools, where last November’s high readings were found. Both schools are served by the Southwestern Pennsylvania Water Authority, which according to state records is in compliance with total THM standards. Flow in the Monongahela River during that period ranged from about 5,000 to 37,000 cfs, averaging a little over 20,000 cfs.

Ziemkiewicz commented that the flow was “high but not unusual for winter on the Mon.”

“There’s always a concern that pollutants are concentrated during low flows and diluted during high flows, and during the November 2015 sampling flow was 2,400 cfs. Serious low flow on the upper Mon is below 1,000 cfs.”

Ziemkiewicz pointed out that the February sampling results did not find any total THM exceedances.

“We were concerned that the high November readings at the Beth Center schools might indicate a trend of increasing THM and we had a couple readings [taken in the Tri-County Water Authority system] in the 70 microgram/liter range in February but none in excess of the 80 microgram limit,” said Ziemkiewicz. “This suggests seasonal exceedances but when averaged out over the year would indicate compliance with water quality standards.”

“That is consistent with PADEP’s findings for the Southwestern Pa. Water Authority which services the Beth Center schools. November’s high total THM levels coincided with late summer/autumn low flows, when water treatment systems are likely to use higher rates of chlorination.”

-WVWRI-

Contact: Paul Ziemkiewicz, Ph.D., Director, West Virginia Water Research Institute
304.293.6958, pziemkie@wvu.edu

as/3/22/16

Updated: 3/31/16

PADEP to Test Water at Beth-Center Schools Following WVU Preliminary Report

Written by Scott Beveridge, Observer-Reporter, Washington, PA on . Posted in Media, News

DEEMSTON – The state Department of Environmental Protection will test the water supply to Bethlehem-Center School District next week on the heels of a preliminary report from a university that shows the supply has elevated levels of cancer-causing chemicals.

West Virginia University Water Research Institute, which performed the water test in November and noted unacceptable levels of trihalomethanes at two Beth-Center schools, also will return to the district next week to perform a more in-depth analysis of the water, said Paul Ziemkiewicz, the institute’s director.

“It’s bad news,” Ziemkiewicz said Friday, adding the results from one test were not reason for the school district to panic.

Beth-Center Superintendent Linda Marcolini reached out to the institute last year after being concerned about tests that showed radiation in Ten Mile Creek. WVU performed follow-up tests on the creek and found the water to be within safe limits of radiation.

Read the full article on the Observer-Reporter website.

Ziemkiewicz Comments on Recent Shale Gas Study

Written by Susan Phillips, Reporter, State Impact on . Posted in Media, News

Contaminants related to shale gas production found in well water in Northeast Pennsylvania likely results from surface spills and leaks, rather than fluid migrating up from fracked wells, according to a new study published this week in the Proceedings of the National Academy of Sciences.

The study also found a correlation between detectable hydrocarbons and proximity to shale gas wells that had been cited by the Pennsylvania Department of Environmental Protection for health and safety violations.

None of the detected levels of hydrocarbons in 64 samples taken from Bradford, Susquehanna and Wayne counties between May 2012 and June 2014, included significant levels of hydrocarbons. All the samples were below 200 parts per billion, which is considered a trace amount.

“Our data is telling us that [the hydrocarbons] are coming from the top down,” said Brian Drollette, lead author on the study and a graduate student at Yale University’s chemical and environmental engineering department. “It’s probably resulting from surface spills near the hydraulically fractured sites.”

The researchers looked for two different types of organic compounds, including those in the gasoline range, as well as those in the same chemical family that includes diesel. They also looked for 54 volatile organic compounds, such as benzene, toluene and ethylbenzene.

The team, led by researchers at Yale University, wanted to find out if there were any detectable levels of hydrocarbons associated with hydraulic fracturing in residential water wells, or if there were some other natural sources of contamination. Methane migration has been linked to poor well casing, but natural sources of methane can also be present in aquifers.

Paul Ziemkiewicz, director of the West Virginia Water Research Institute and who was not involved in this research, says it’s a “good, sound study” that adds to the growing body of literature about the impact of shale gas drilling on water quality.

“I don’t think too many people have looked at the actual migration pathways of organic compounds,” said Ziemkiewicz.

He’s conducted his own research, and says the link to surface spills, rather than upward migration of frack water, confirms his own study conclusions.

“That’s what I’ve been saying for the past five years,” said Ziemkiewicz. “My point has been all along that it’s mainly surface spills and illegal transport and dumping that are responsible for most of the contamination. And migration from the actual Marcellus level up to the surface is extremely unlikely.”

Read the full article on the State Impact website.

Survey: Allegheny River water quality holds steady

Written by Mary Ann Thomas, Staff Writer, Trib Total Media on . Posted in Media, News

Water quality is holding steady on the Allegheny River even though Marcellus shale drilling waste water and other river contaminants linger, according to one of the most comprehensive water surveys in the region.

However, all the news is not good: water from a creek in Indiana County that eventually drains into the Allegheny River via the Kiski River near Freeport keeps turning up bromide, a salt often associated with waste water from Marcellus shale fracking and abandoned mine drainage.

When combined with chlorine to treat drinking water drawn from the Allegheny, bromide form the carcinogen trihalomethane (THM).

The results are part of the Three Rivers Quest (3RQ) study, now in its third year, covering more than 30,000 square miles of the Upper Ohio River Basin. There are 54 sampling locations along the Allegheny, Monongahela and Ohio rivers and at the mouths of their major tributaries.

Read the entire article on the Pittsburgh Tribune Review website.