The 40 Gallon Challenge is an easy-to-use, comprehensive indoor and outdoor water conservation educational tool. It can be used nationwide and easily incorporated into existing educational programs. Promotional materials and pledge cards are available on the 40 Gallon Challenge website and can be modified by educators. The website displays data related to the impacts of the educational tool nationwide, statewide, and countywide. As of the writing of this article, 10,395 people had read the indoor and outdoor water conservation practices and pledged to save approximately 1.8 million gal of water per day (645 million gal per year).
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Shefield, M. C., Bauske, E., Pugliese, P., Kolich, H., & Boellstorff, D. (2016). Implementing the 40 Gallon Challenge to Increase Water Conservation. The Journal of Extension, 54(6), Article 9. https://tigerprints.clemson.edu/joe/vol54/iss6/9