80 years of progress you can’t always see—but you can feel.
See how ALCOSAN’s work has helped protect public health and our waterways for generations.
Stories that make “invisible” infrastructure feel real.

Follow the journey from your home to treatment—and back to the rivers.
Learn moreThe people driving change — click any card to read their story.
" For 80 years, our mission has been clear: protect public health and ensure this region has access to clean water.

For 80 years, ALCOSAN has answered the call for a unified regional approach to protecting public health and keeping waterways clean.

This anniversary is a reminder of the vision, courage, and regional cooperation that made this system possible.

Reliable wastewater collection and treatment is fundamental to public health, and we are building the infrastructure needed to stay ahead of future environmental needs.

Cleaning up sewer overflows into our beautiful rivers — a million gallons at a time.

The Scholastic Outreach Division has transformed the way students understand the important work that we do every day.