Kiwa certifies all chemicals for the treatment of drinking water water against NSF/ANSI 60.

Most North American governmental agencies that regulate drinking water supplies require that water treatment chemicals comply with NSF/ANSI 60: Drinking Water Treatment Chemicals – Health Effects. 
This standard sets health effects criteria for all water treatment chemicals. including:

  • Chemicals for corrosion and scale control
  • Coagulants and flocculants
  • Chemicals for softening, precipitation, sequestering and pH adjustment
  • Disinfection and oxidation chemicals
  • All other specialty chemicals used in drinking water treatment

Kiwa can provide a NSF/ANSI 60 certification mark, which identifies the strict compliance of drinking water treatment chemicals. All NSF/ANSI 60 certified drinking water treatment chemicals are controlled by annual testing and annual factory audits to ensure continued consistency of required quality levels.

Kiwa is ISO/IEC 17065 accredited by the American National Standard Institute (ANSI). Our accreditation status and accredited scope is displayed on ANSI accreditation Kiwa Nederland.

Using NSF/ANSI 60 certified products ensures that these chemicals will not leach contaminants to the drinking water that can cause health effects and regulatory problems.

To maintain certification, manufacturers cannot change suppliers or formulations without evaluation and approval from Kiwa.

Target groups

For manufacturers of water treatment chemicals Kiwa is the right address for the testing and certifications needed to become product acceptance and code compliance across North America. Kiwa has a close cooperation with recognized North American certification agencies.

When is it required?

The vast majority of US states require NSF/ANSI 60 for municipal water treatment chemicals.

State agencies can issue penalties and can order removal of noncertified products.

When products are not certified to NSF/ANSI 60, manufacturers have no restrictions on changing formulations. That can lead to contamination issues as well as performance problems.

Process steps

For more information and applications please contact the Product Group Hygienic Aspects,