Hands-On Exhibits
Explore educational displays and interactive activities designed to make science, engineering and clean water engaging for every age.
80th Anniversary · 1946 — 2026
ALCOSAN’s 2026 Open House
Celebrate 80 years of clean-water progress with a free, fun-filled day of hands-on exhibits, family activities and a behind-the-scenes look at how ALCOSAN protects our region’s rivers and streams.
Saturday · 2026
9:00 AM – 4:00 PM
Rain or shine
Explore, discover and celebrate
What is Open House?
Every year, visitors come to ALCOSAN for hands-on activities, plant tours and exhibits that showcase our work and wastewater treatment processes. Whether you are a curious student, a science enthusiast or simply enjoy learning something new, Open House is the perfect day to explore and discover.
From interactive experiments to the technology helping keep our waterways clean, there is something for everyone—and it is as fun as it is educational.
Eight decades of public service
A legacy worth celebrating
80
Years of Service
23
Open Houses
1,700+
2025 Visitors
83
Communities Served
What you’ll experience
Discover ALCOSAN from the inside out
Follow the journey of clean water while exploring the work shaping the future of our region.
Plant Tours
Go behind the scenes to see the systems, technology and skilled professionals involved in treating wastewater.
Clean Water Progress
Learn how plant expansion and other Clean Water Plan projects are protecting rivers and streams for generations to come.
Family Fun
Enjoy a welcoming community event filled with discovery, memorable activities and opportunities to learn together.
A look back at 2025
23rd Annual Open House
Thank you, Pittsburgh! Nearly 1,700 visitors joined us for our biggest celebration of clean water yet.
From exploring our new outfall to meeting Frankie the Fish, taking the PUP Pledge and diving into hands-on science, our guests made it an unforgettable day.