Friends of the Shenandoah River

E. coli Testing Results for July 30, 2025

Good news! Our latest E. coli results show lower levels
New infographic with this week’s testing results.

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! From fishing and kayaking to tubing and good old-fashioned splashing around, it was a lively day on the water.  We were greeted with genuine interest and appreciation, thank you to everyone who stopped to chat with us!

Young kayakers showing us how it’s done! Front Royal public boat landing, South Fork Shenandoah River, Warren County VA

Here’s the positive news: E. coli levels at all our River sampling sites were below the EPA’s recommended threshold of 235 CFU per 100mL. Explore our new interactive map and QR codes for every monitoring site at the button links below.

The recent stretch of dry weather has given the River a break from heavy rain that causes an increase in runoff.  We observed a noticeable improvement in water clarity; less silt and sediment and the riverbed was visible at most locations.

And it’s not just the air heating up… at Castleman’s Ferry (Main-stem, Clarke County), we recorded the highest water temp of the summer so far: 85.1ºF!

We’ll continue monitoring the Shenandoah and sharing updates to keep you informed about the health of your River.

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E. Coli Test results for July 31, 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.

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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