Energy and Environment Clean Water Without Energy or Toxic Waste Written by Jane Marsh November 23, 2022January 25, 2023 Saving Bookmark this article Bookmarked Access to clean water is necessary to sustain life on earth. Yet, a limited amount is drinkable for a planet made up of 70% water. Freshwater accounts for 2.5% of water resources — the rest is ocean water. Even then, glaciers and ice caps contain a portion of it, rendering it inaccessible. Dig deeper → 3 min