The world faces an invisible crisis of water quality. Its impacts are wider, deeper, and more uncertain than previously thought and require urgent attention.
While much attention has focused on water quantity – too much water, in the case of floods; too little water, in the case of droughts – water quality has attracted significantly less consideration. Quality Unknown shows that urgent attention must be given to the hidden dangers that lie beneath the water’s surface:
- Water quality challenges are not unique to developing countries but universal across rich and poor countries alike. High-income status does not confer immunity - challenges with pollutants grow alongside GDP. And as countries develop, the cocktail of chemicals and vectors they contend with change – from fecal bacteria to nitrogen to pharmaceuticals and plastics, for example.
- What we think of as safe may be far from it. Water quality is complex and its impacts on health and other sectors are still largely uncertain. Worse, regulations guiding safety standards are often fragmented across countries and agencies, thus adding to this uncertainty. This report shows that some pollutants in water have impacts that were previously unknown and occur at levels below established safe norms.
- The forces driving these challenges are accelerating. Intensification of agriculture, land use changes, more variable rainfall patterns due to climate change and growing industrialization due to countries’ development all continue to grow. This means increasing number of algal blooms in water which are deadly for humans and ecosystems alike.