The World Health Organization (WHO) has long recognized NSF as a Collaborating Center. In May, WHO and NSF expanded this relationship by WHO approving NSF’s plans to certify products to NSF P415 – Household Water Treatment Options – microbiological. This protocol is a vehicle to allow NSF certification and use of the NSF Mark for systems conforming to WHO’s Evaluating Household Water Treatment Options: Health-based targets and microbiological performance specifications from 2011. Systems must also meet NSF requirements for material safety structural integrity to meet the requirements of NSF P415. Note that in no case will use of the WHO logo be allowed.
One significant benefit of this protocol is that it helps provide an approach to certify products for markets in developing countries. Although using the P231 test methodology, the log reduction requirements for "Protective" and "Interim" levels of performance are significantly less than those in P231. Another benefit is that the same test could be used to potentially qualify a product for both P231 and P415 certification if the log reductions are sufficient.
Please contact your Certification Project Manager (CPM) for additional information.