NSF's certification of products to the EPA WaterSense® program is a simple 7-step process.
Step 1: Completion of the EPA Manufacturers Partnership Agreement
Step 4: NSF inspection of production facility.
Step 5: NSF Listing and authorization for WaterSense label.
Step 6: Contact EPA to submit a New Certified Product Notification Form to update the EPA WaterSense product registry.
Step 7: Ongoing monitoring program including factory inspections and product retesting.
For more information on the certification process, or for more information, contact NSF.