30. Native plants
Colleges like Centralia are switching to native plants, which need less water and maintenance due to their indigenous status.
To reduce the passage of rainwater into the sewer system, colleges are installing green roofs, which feature vegetation that consumes a large amount of water before running off. These systems also help to keep the top floor of buildings cooler during hot months, and insulated from cold temperatures and icy winds in the winter.
21. Using cisterns
Colleges are using cisterns to harvest rainwater. At Harford Community College, they capture rooftop runoff in an 80,000 gallon cistern to use in an evaporative cooling tower.
22. Leak reporting
Dripping faucets can waste more than 600 gallons a year, and running toilets waste more than 131,000 gallons. On many college campuses, students, faculty, and staff are encouraged to report any leaks that they see. Doing so can alert the maintenance staff to undiscovered sources of water waste that can be resolved easily.
Instead of allowing bottled water as an option at campus events and at dining facilities, colleges like Harvey Mudd College are selling or providing refillable water bottles to faculty, staff, and students.