Friends of the Shenandoah River

E. coli Testing Results for May 19, 2026

FOSR’s KNOW BEFORE YOU GO! Celebrates 10 Years of Summer River E. coli Testing

Friends of Shenandoah are proud to launch the 10th year of our KNOW BEFORE YOU GO! Summer E. coli Testing Program at public access sites along the North Fork, South Fork, and Main Stem of the Shenandoah River. This year, we will continue to include testing at Hawksbill Creek at the Luray-Hawksbill Greenway Pocket Park, downstream of the pedestrian bridge.

Through this program, we provide timely water quality data to help residents and visitors make informed decisions about potential exposure to E. coli bacteria while enjoying recreation on the river. Whether you are paddling, fishing, playing, or simply relaxing in the water, KNOW BEFORE YOU GO! offers valuable information to support a more enjoyable river experience throughout the summer season.

Results from the first testing event of the summer, conducted on May 19, 2026, showed that E. coli levels at every site tested were below the EPA’s recommended threshold of 235 CFUs.

Help us keep FOSR’s Summer Weekly E. coli Testing Program going strong! Donate today!

Your donation helps us continue providing important, timely, and reliable water quality data each week throughout the summer season. With your support, we can keep the community informed and connected to the river we all enjoy.

Donate today!

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E. Coli Test results for May 20, 2026

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