EPA acknowledges NHI’s CHAP approach under their Regional, Habitat Assessments – Water: Healthy Watersheds EPA’s mission is “to protect human health and the environment.” EPA, along with other federal and state agencies collectively bears responsibilities for ensuring that ecological systems are conserved. In particular collaborating with the Habitat Institute working to sustain and restore natural freshwater resources/habitats. Freshwater habitats are comprised of flowing (i.e., streams and rivers) and standing (i.e., lakes, ponds, and wetlands) waters.. Viewing complex biological systems and conducting ecological research assessment projects dealing with developing ways to more efficiently evaluate the health of water bodies. Function research looks at what water bodies do for us, such as providing drinking water or habitat for fish, and how to protect those functions. Together, these water research projects help protect the nation’s wetlands, streams, rivers, and lakes.