The ALCOSAN wastewater treatment plant is a 59-acre facility on Pittsburgh’s North Side at 3300 Preble Avenue.


Tour Our Facility

The best way to learn how the treatment plant operates and why it is important is by watching the process in action.  Tours are available for school groups and adult groups.


Free adult group tours are available by appointment from March through October, weather permitting, between 8:30 a.m. to 4 p.m. Mondays through Fridays. All tours must be arranged in advance.

Schedule a Tour

Due to plant construction, we are unable to accommodate tours at this time. Please check the status at a later time. Thank you.

For more information about scheduling tours for school groups, please submit the below form. 

Request School Group Tours

For information about tours for adult groups, please submit the below form.

Request Adult Group Tours