Friends of the Shenandoah River

E. coli Testing Results for September 02, 2025

Did the Streak Continue For a Fourth Consecutive E. coli Testing Event?
Seeing the river through curious eyes, inspiring the next generation of river stewards

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 colony-forming units per 100 mL of water. This exceeds the EPA’s recommended Beach Action Value (BAV) threshold for freshwater recreation, which is 235 CFU/100 mL.

However, there is good news. All other monitored sites, including Manassas Run and Hawksbill Creek, tested below the EPA’s BAV threshold.

Share this on :

Facebook
X
LinkedIn
Email
Print

E. Coli Test results for September 3, 2025

These results provide a snapshot of the E. coli bacteria concentrations at the designated sites on the date, time, and under the conditions that the water samples were collected.

Add Your Heading Text Here

Add Your Heading Text Here

Test Results Archive

⚠️KNOW BEFORE YOU GO! This Week’s E. coli Testing Results Are Now Available 🟢 Good news for the Main Stem, South Fork, and North Fork of the Shenandoah River: E. coli levels at all sites

⚠️ KNOW BEFORE YOU GO! Water Testing Update 💧 🧪 Today, our FOSR lab staff rolled up their sleeves and collected 10 water samples from testing sites across the area! 🔬 Samples have been processed

Cheers to river floats, hot dogs, and well-earned days off!

⚠️KNOW BEFORE YOU GO! This Week’s E. coli Testing Results Are Now Available First and foremost: Thank you to those who donated to support this program. Your generosity keeps this program flowing, and we’re deeply

Thinking about taking the family to the river this Labor Day weekend? 🌊 Concerned about potential exposure to E. coli bacteria? 🦠 OH YA, let’s check out the Friends of the Shenandoah River’s KNOW BEFORE

We need your support to keep monitoring through these crucial final weeks of summer.

⚠️KNOW BEFORE YOU GO! This Week’s E. coli Testing Results Are Now Available 🟢 The trend continues. E. coli levels at the sites tested yesterday on the Main Stem and South Fork of the Shenandoah

Cool Mornings, Hot Labor Day Ahead!

🌅 Dare I say it was a crisp 59°F when I headed down the road this morning to collect water samples for FOSR’s Know Before You Go! Summer Weekly E. coli Testing Program? While these

A chilly sart to the morning gave way to a warmer afternoon

⚠️KNOW BEFORE YOU GO! This Week’s E. coli Testing Results Are Now Available 🟢 Once again, good news for river lovers. The E. coli levels at all the River sites tested yesterday did not exceeded

Hazy, Warm, and Humid: Just Another Summer Day in Virginia

🛑 KNOW BEFORE YOU GO! This Week’s E. coli Testing Results Are Now Available Great news for river lovers and a warning for those heading into Hawksbill Creek at the Pocket Park! Here is what

Low Levels & High Temps: Fueling Algae and Aquatic Plant Growth

🛑 KNOW BEFORE YOU GO! This Week’s E. coli Testing Results Are Now Available Check the latest data before heading out on the water! 📉 🏞️Field Observations Most notable this week […]

Lined up and ready to Ride the River.

KNOW BEFORE YOU GO! Another week brings updated E. coli testing results for our monitoring sites. Check the latest data before heading out on the water! 📢 Important Program Update: Due to limited funding,

Six Sites Exceed E. coli Threshold

KNOW BEFORE YOU GO! The E. coli test results for water samples collected yesterday varied significantly across monitoring locations. Once again, elevated bacteria levels were widespread: every single county monitored (Clarke, Warren, Page, and

Planning to Cool off in the River to Beat the Heat?

🛑KNOW BEFORE YOU GO! Planning to hit the river to cool off from the summer heat? 🌡️ Before you pack up the family, inflate the tubes, grab your fishing gear 🎣, and load up the

Only One River Site had Exceedingly High E. coli Levels

🛑 KNOW BEFORE YOU GO! Planning to hit the river for the 4th of July weekend? 🦅 🗽🎆 🎇🍔 🌭 🍉 🥤 🥳 Before you pack up the family and gear ☀️🕶️🎣🚣‍♂️, check out the

A Mixed Bag of E. coli Results Across 14 Monitored Sites

🛑 KNOW BEFORE YOU GO! Yesterday’s water samples across our 14 monitored sites brought in a mixed bag of E. coli results. ⚠️ Notably, the high bacteria levels were widespread: in every single county we

Drought Conditions Continue – E. coli levels on Main River Channels below the threshold

  💧Drought conditions continue, causing decreasing water levels, as pictured. On the bright side, the measured E. coli levels at all the South Fork, North Fork and Main-stem River sites tested were well below the