
E. coli Testing Results for September 18, 2025
As the summer of 2025 comes to a close, Friends of the Shenandoah River (FOSR) has completed its final E. coli monitoring event for the season. Of the 14 sites

E. coli Testing Results for September 02, 2025
Unfortunately, no, the E. coli level measured in the Shenandoah River at Lockes Landing public boat landing (site FC05) in Clarke County, VA was 248.1 MPN (most probable number) of

E. coli Testing Results for August 27, 2025
Great news heading into the holiday weekend, with no rain in the forecast, we’re hopeful that E. coli levels will stay consistent with yesterday’s results at the river sites we

E. coli Testing Results for August 20, 2025
Friends: This week’s testing results show the E. coli levels at all monitored sites, except one, were below the EPA’s recommended “do not exceed” threshold of 235 CFU per 100mL

E. coli Testing Results for August 12, 2025
The E. coli levels at all the River sites and Manassas Run (FW36, Warren County VA) tested were below the EPA’s recommended “do not exceed” threshold of 235 CFU of

E. coli Testing Results for August 06, 2025
In addition to lower water levels, mostly clearer conditions, and cooler temperatures this week, we observed a significant change in the E. coli level at our Hawksbill Creek site near

E. coli Testing Results for July 30, 2025
While collecting water samples yesterday along the North Fork, South Fork, and Main-stem of the Shenandoah River, we couldn’t help but notice how many people were out enjoying the River!

E. coli Testing Results for July 23, 2025
At only one River site this week, the northernmost testing site on the Main-stem Shenandoah River, FC08 Castleman’s Ferry public boat launch in Clarke County VA, the E. coli level

E. coli Testing Results for July 16, 2025
Folks, the E. coli levels measured for the water samples collected and tested yesterday, July 16, may no longer represent current water quality. It is important to remember that the

E. coli Testing Results for July 09, 2025
There was a noticeable decrease in the E. coli levels at all of the sites monitored yesterday, Wednesday July 09, compared to a week ago. However, the E. coli level

E. coli Testing Results for July 02, 2025
All four sites tested on the Shenandoah River Main-stem, along with three sites on the South Fork and three on the North Fork, had elevated E. coli levels exceeding the

E. coli Testing Results for June 25, 2025
The water levels at all the sites we tested have decreased since last week, additionally, at many of the sites the water was less turbid/muddy, improving the water’s clarity. In the