NPDES – Web

January 7, 2026
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Environmental scientists collect water samples and document conditions inside a large concrete stormwater outfall, illustrating NPDES compliance monitoring and pollutant discharge assessment under the Clean Water Act.

Two environmental professionals are positioned inside a large concrete stormwater culvert where it discharges into a shallow stream. One team member kneels near the outfall opening collecting a water sample, while the other documents observations on a clipboard farther inside the pipe. The culvert is surrounded by dense green vegetation, and a small amount of water flows through the structure. The scene reflects field-based monitoring, sampling, and documentation activities commonly performed to evaluate stormwater discharges and support compliance with NPDES permitting requirements.


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