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Research

New Croton Reservoir from Gate House Bridge

Salt Rising in N.Y.C. Source Water, New Report Echoes Stroud Center Study

800 450 Stroud Water Research Center

Twenty-five years after Stroud Center scientists found high salt levels, a new report shows N.Y.C. water sources are trending toward undrinkable.

Diana Oviedo Vargas, Ph.D., collects biosolid samples to test for PFAS.

Study Points to Farmland as Possible Source of PFAS in Fish

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The Stroud Center and the Center for PFAS Solutions have been studying how much biosolids are contaminating farmland and adjacent waters since 2021.

A scientist shows a small live eel to children at World Water Day.

Wild World Water Day!

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The Stroud Center welcomed 160+ visitors for hands-on science, stream fun, and more. Join us on March 21, 2026, for another exciting event!

Stroud Center Executive Director David B. Arscott along with Director of Watershed Restoration Matthew Ehrhart and Senior Research Scientist Jackson, Ph.D., accept the Watershed Champion award.

Stroud Center Named Watershed Champion by Philly–Area Collaborative

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A collaborative led by the Pennsylvania Environmental Council honors Stroud Center for its role in protecting and restoring the Delaware River Watershed.

WATER/ROOTS: Assessing and Supporting Stream Health

800 450 Stroud Water Research Center

Learn how to assess and support stream health with Scott Ensign, Ph.D., assistant director, vice president, and research scientist at Stroud Water Research Center.

Publication title with image of a mayfly

Quantification of PFAS in soils treated with biosolids in ten northeastern US farms

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Oviedo-Vargas, D., J. Anton, S. Coleman-Kammula, and X. Qin. 2025. Scientific Reports 15: Article 5582.

An adult mayfly with large eyes sitting on a leaf.

Four Seasons of Salt Threaten Wildlife

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Excessive winter salt use is leading to year-round pollution in fresh water. Discover why this is a problem and what you can do about it.

Two entomologist preparing a sample and recording data alongside a stream.

Conducting World-Leading, Innovative Freshwater Research

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On the Start Local podcast, John Jackson, Ph.D., shares insights into how the Stroud Center uses innovative science to protect and preserve fresh water.

Young riparian buffer in Franklin Township, Pa.

Stroud Center Receives Foxwynd Foundation Grant to Gather Data on Impact of Watershed Restoration Efforts

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The grant will help Stroud Water Research Center collect much-needed environmental data to inform spending on water quality investments.