EPA Guidelines for Cross-Contamination Testing

Wastewater

• Water and wastewater treatment plants must frequently monitor their facilities for cross-contamination. Oversight is provided by the EPA to ensure proper use of wastewater and the materials used by facility operators. Testing helps to lower risks of infection from cross-contamination to at-risk populations.
  
  

Laboratories

• When laboratory tests are performed that could affect human health, the EPA enforces tests to protect against substances contaminating one another. Dust, vapors and gasses can interfere with test results, as well as contamination from human contact.
  
  

Contact

• Body-modification procedures require strict supervision. Businesses licensed to perform piercing and tattooing are subject to regulations to prevent contamination that could lead to clients contracting infections. Hand washing, sterilization of instruments and proper cleaning of work surfaces are monitored.