![Detail of an illustrated plate depicting sediment (chiefly algae) from tap water collected on cotton disks in Cambridge, Massachusetts during the autumn of 1913.](https://www.sciencehistory.org/wp-content/uploads/2023/04/plate_a_sediment-e1680811711487.jpeg)
Rebecca McCarthy
Rebecca McCarthy is a freelance writer and former assistant editor at Distillations. She was previously the editorial assistant at Voice of Witness, an oral history nonprofit.
Featured image from our digital collections:
Plate A: Sediment (Chiefly Algae) from Cambridge Tap Water
Part of The Microscopy of Drinking Water by George Chandler Whipple, 1914.