Launch of FOSR’s 2023 Summer E. coli Testing Program

The E. coli levels at 2 of the 12 sites tested on Thursday, September 1, 2022, did exceeded the 235 E. coli CFU/100 mL threshold for recreational use. These two

The E. coli levels at all of the 13 sites tested on Thursday, August 25, 2022, did not exceeded the 235 E. coli CFU/100 mL threshold for recreational use. I

The E. coli levels at all of the 14 sites tested on Wednesday, August 17, 2022, did not exceeded the 235 E. coli CFU/100 mL threshold for recreational use. https://fosr.org/wp-content/uploads/2022/08/FOSR-2022-Summer-Quantitative-E.-coli-Concentration-Results-through-08.17.2022.pdf

Of the 14 sites tested on Tuesday, August 02, 2022, one exceeded the 235 E. coli CFU/100 mL threshold for recreational use. The site that exceeded was: FCOC – Opequon

On July 20, 2022 while collecting water samples we observed what appeared to be a mix of green algae and aquatic vegetation in the North Fork Shenandoah River at the

Of the 14 sites tested on Wednesday, July 20, 2022, two exceeded the 235 E. coli CFU/100 mL threshold for recreational use. The sites that exceeded were: FW36 – Manassas