See the latest time-lapse on ALCOSAN’s plant expansion.
Learn how you can make a difference in the environment with STEAM based learning.
ALCOSAN's Clean Water Plan is a 20-year, $2 billion endeavor that will reduce the overflow problem by 7 billion gallons a year.
See Our Plan
Keeping water out of the system.
Taking responsibility for more infrastructure.
Building new infrastructure for tomorrow.
Increasing our treatment capacity.
At ALCOSAN, we know construction delays and closures can impact your daily travels.
Meet Frankie. Along with his friends, Frankie explains how we can keep our rivers clean.
There are a variety of different ways to get involved with ALCOSAN throughout the year.
We encourage new businesses to work with us.
View open bids
We offer a variety of programs for teachers & families.
See what's available
ALCOSAN Board meetings are open to the public.
See the schedule
Millions of Gallons of Daily Wastewater Treatment Capacity
Sewer System Miles and Growing
Mar 14, 2024
Mar 19, 2024
Jan 11, 2024
ALCOSAN’s Scholastic Outreach Program provides environmental awareness for students, teachers & communities, all within ALCOSAN’s service area.