The Pennsylvania Department of Environmental Protection (DEP) yesterday announced results of in-stream water quality monitoring for radioactive material in seven of the Commonwealth’s rivers. Seven river testing stations – which monitor “raw water” in the river before it enters public water suppliers’ intakes where the water receives further treatment – that were evaluated are Monongahela at Charleroi in Washington County, South Fork Ten Mile Creek in Greene County, Conemaugh in Indiana County, Allegheny at Kennerdell in Venango County, Beaver in Beaver County, Tioga in Tioga County, and the West Branch of the Susquehanna in Lycoming County. All seven samples showed levels at or below the normal naturally occurring background levels of radioactivity.

According to the Associated Press, a review of state records shows most of the gas-drilling wastewater that was treated and discharged by sewage plants in the second half of 2010 found its way into eight (8) waterways, seven of which were tested (above) by DEP. The eighth waterway, Blacklick Creek in southwestern Pennsylvania - is a tributary of the Conemaugh, one of the 7 tested locations. The tests were conducted in November and December of 2010 at stations downstream of wastewater treatment plants that accept flowback and production water from Marcellus Shale drilling. DEP said that these sampling stations were installed last fall specifically to monitor stream quality for potential impacts of Marcellus development.