The EPA has tons of lessons and activities about air, climate change, ecosystems, energy, health, water, and reduce, reuse, recycle. I've already found 6 that match what my students are learning about next week! I also found that the EPA offers grants to groups/school districts for environmental education. Wish I'd known that before the deadline.
This folder provides essential information about onsite wastewater treatment system & guidelines for operation/maintenance to keep system working effectively, while protecting water quality and the environment. It also provides a place to keep all documents, records and other information; including permit, site drawings, records of maintenance and repairs performed, etc.: http://www.nowra.org/files/Homeowner%20Onsite%20Systems%20folder.pdf