Saturday, September 21, 2019 marks the return of ALCOSAN's annual award-winning Open House event, FREE and open to the public from 9:00 a.m. to 4:00 p.m., rain or shine! Join us for the region's largest watershed and environmental festival, featuring hands-on environmental exhibits, treatment plant and laboratory tours, microbiology and watershed life demonstrations, and educational activities for all ages!

Save time in line by completing our online registration form today.

Please Note: 
Open House registration is for entrance into the event only and does not register you for a plant tour. Visitors should proceed to the Tour Ticket tent to get on the tour schedule.

Have you ever been to a previous Open House?

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Have you ever been to a previous Open House as a child and are now attending as a parent?

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This is a working treatment plant, so please leave your pets at home.

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