Summary:
- The chemical DEET, commonly used in insect repellents, has been found to be building up in drinking water supplies.
- DEET is a synthetic chemical that is used to repel insects, but it can also be harmful to the environment and human health if present in high concentrations.
- Researchers are concerned about the long-term effects of DEET accumulation in water sources and are calling for more research to understand the full impact on ecosystems and human health.