section_path: History
section_name: History
paragraph_text: History
  
  In drinking water access, quality and quantity are both important parameters but the quantity is often prioritized. Throughout human history, water quality has been a constant and ongoing challenge. Certain crises have led to major changes in knowledge, policy, and regulatory structures. The drivers of change can vary: the cholera epidemic in the 1850s in London led John Snow to further our understanding of waterborne diseases. However, London's sanitary revolution was driven by political motivations and social priorities before the science was accepted.