Effluent water meets national or international safety standards for chemical and physical contaminants.
Effluent water meets NSF/ANSI Standard 42: reduction in aesthetic and non-health related contaminants in drinking water.
Effluent water meets NSF/ANSI Standard 53: reduction in specific health-related contaminants such as lead, volatile organic chemicals (VOCs), and methyl tert-butyl ether (MTBE).
Independent laboratory testing follows the above or other currently accepted local or international test protocols.
Notes and exceptions
Confirm if full NSF Standard 53 compliance is recommended.
Effluent water is test for toxicity. While each device component should be tested for safety (i.e., NSF Standard 61), the effluent water testing (NSF Standards 42 and 53) is done to see what people are actually drinking—what they are being exposed to.
If additional contaminants can be removed (e.g., arsenic, fluoride, industrial, or agricultural chemicals) testing must be conducted to back up these claims.