Passport To Clean Water

Passport To Clean Water

Important! Due to COVID-19, this year’s event will not take place in person at Greentree Park but will be virtual! 

Check back here during August 15 – 23 for online interactive activities and take-home activities from organizations whose missions include water quality, greenway recreation, and conservation! OSC’s goal with this event is to provide all participants with crucial, take-home knowledge on how they can improve and enjoy the watershed in their own daily lives. These programs are for children, ages 5 to 18 years, and their families.

Organizations featured at this year’s virtual event will be Great Rivers Greenway, MSD Project Clear, St. Louis Audubon Society, Missouri Coalition for the Environment and Watershed Cairns.

We are also offering a remote self-guided opportunity to mark Storm Drains as part of MSD Project Clear. We have “Mark a Storm Drain” activity kits available for curbside pick up from our office. Email to receive yours! The kit includes everything you need to mark storm drains near you. Storm drain marking is one way to remind the public that storm sewers are for water and not trash.

Share a photo of you and your family doing any of the Passport to Clean Water activities and you’ll be entered to win an Operation Clean Stream prize pack! You can share photos to social media and use the hashtag #Passport2CleanWater or you can email photos to

Read our blog for a summary of 2019’s event & photos.

If you are an environmental organization who would like to participate in this year’s event please contact us at If you would like to sponsor this year’s event, please contact Caitlin Zera, Program Manager at to discuss sponsorship opportunities.

Missouri State Parks interpreter talks about the amazing mussels of the Meramec at Passport to Clean Water!