BREAKING: In a 5-4 decision, the Supreme Court severely weakened the Clean Water Act in Sackett v. EPA. This is a catastrophic loss for water protections across the country and a win for big polluters, putting our communities, public health, and local ecosystems in danger.

Organizations in the #DelRiverWatershed are working to restore native wild celery grass! Celery grass improves water clarity, sinks carbon, provides food & habitat, and more! Learn more about celery grass & restoration efforts here> https://t.co/oWEGCCjNnG #DEWatershedWednesday

Asian clams are an invasive mollusk that can be found in our freshwater habitats and have a relatively thick shell compared to other bivalves. In areas with high populations of the species, these clams outcompete native freshwater mussels for food and space. #dewetlands

One of the most helpful things humans can do to improve river ecosystems, she said, is to remove dams. https://t.co/cS7mxZ9gZO

Native species support clean water, but PA's natives are in decline. You can help by planting some! Check out our trifold featuring native trees and shrubs of the mid-Atlantic: https://t.co/oOjnHJEyBv #PANativeSpeciesDay #PAnativespecies #PAnativeplants #PAnativefish

Everyone lives in a watershed, and when Pennsylvanians partner to care for our watersheds, we improve the environment right in our own back yards.

Happy #TributaryTuesday in the #DelawareRiver Basin! Enjoy these pics of the Neversink River Unique Area. Located in Sullivan Co., NY, this area features a gorge and several waterfalls. It is great for hiking & fishing. Learn more: https://t.co/m3dBvlXpjK @NYSDEC

Megafish: a freshwater fish over six feet in length or more than 200 pounds. Catch our latest "Fish of the Week" episode with special guest Zeb Hogan: https://t.co/2wVquS5xFX Alligator Gar. 📷 Ryan Hagerty/USFWS #AllTheFish

Want to know where your drinking water comes from? Curious about the status of your water? This #DrinkingWaterWeek check out this interactive map to learn about where your water comes from> https://t.co/y51fnwUmbY

Pickerel frogs are found throughout PA in marshes, streams and springs. They release an irritating substance that is often toxic to would-be predators. You can tell them from other spotted frogs by their rows of squarish spots. Learn more➡️ https://t.co/RZwg1INmI6. #AmphibianWeek

Sometimes it's hard to be a serious and professional science agency when amphibians like the northern red salamander exist. Our first caption was, "LOOK AT THIS PERFECT SMOL NUGGET! HAVE YOU EVER SEEN ANYTHING MORE PERFECT IN YOUR WHOLE LIFE?! LOOK AT THEM DO THEIR PUSHY UPPIES!

Happy #WildlifeWednesday of #AmphibianWeek! Why amphibians? They're sensitive to environmental stressors, making them a good indicator species. Many are also at risk for extinction. Enjoy these pics of a few from around the #DelawareRiver Basin. More info: https://t.co/xTSD4aw7Fy

While many are familiar with the larger species of the catfish family, Madtoms are very small and are rarely seen. Growing up to 3 inches in length, these vertebrates can easily hide under logs or swim through rocks in freshwater wetlands and habitats. #dewetlands

Wait for it! Cool demo of the fish lifts @ConowingoDam. They separate out the American Shad & River Herring to release them upstream. Invasive fish species are removed and donated to food banks. Everyone else takes a water slide back down into the SusQ River!🐟🛝 @ichthyoAaron

Today is @DrexelUniv's 24 Hours of Impact! Visit the link below to learn how you can support the many areas of Drexel that make us unique, from academic programs and the student experience to innovation and civic engagement. #drexel24 https://t.co/nHPb81Emrn

Friday, May 12 is the last day to apply to DESLA! This pre-college summer program is an exciting opportunity for high school students to gain hands-on field experience alongside @DrexelUniv faculty and scientists from @AcadNatSci. Learn more:

How does your drinking water make it to your faucet? In the US, 90% of people get their #drinkingwater from a public water system that treats, stores & distributes the water. Learn more ⬇️ https://t.co/pqugeTogAP @EPAwater #DrinkingWaterWeek

DYK that Pennsylvania includes two of the largest tributaries for the #DelawareRiver? It's true! The #LehighRiver and #SchuylkillRiver are precious resources that provide water for drinking, farming, and recreating. That's why we're celebrating them for #PACleanWaterWeek.

Happy #AmericanWetlandsMonth! Wetlands, next to a rainforest, are one of the most diverse and productive habitats on the planet. And here in the Chesapeake, they reduce pollution, limit flooding, harbor wildlife and make our parks all the more beautiful. https://t.co/f9p1KY1GpH

It was all yellow this morning for the #CityNatureChallenge 💛 #iNatThatJawn