For me it seems like the Internet Archive gives the possibility to participate to everybody - so if you think this webpage should be archived, you can just do it by yourself, everybody who has a free account on the internet archive, can add something to the archive - but besides this, they are having a lot of partnerships with libraries and other institutions to be always behind important web pages that should be archived.
The key participation that the Pollution Reporter app supports is the ability for a user to report a pollution event, spill, or leak to the Ontario Ministry of Environment, making it easier for community members to report problems to the Spill Action Centre. The app assists in making the report, which is then sent through the users own email, and allows users to share on social media or keep a record of their reports.
This reporting workflow is one of the main features of the app (one of four) and is located in the bottom navigation bar as the report icon (next to the polluters, chemicals, and health symptoms icons).