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NSF/ANSI 40: Residential Onsite Systems -NSF International Page 3 of 3 <br /> Initial Certification <br /> 1. Your company submits an application. <br /> 2. NSF reviews general information, drawings and design specifications of the <br /> treatment system. <br /> 3. NSF installs the unit at our test facility and performs thorough testing. <br /> 4. NSF issues a final test report. <br /> 5. NSF reviews product literature, data plates, sen ice labels and related <br /> documentation. <br /> 6. NSF performs an initial audit of the manufacturing facility. <br /> 7. Upon gaining certification,your company may use the NSF mark on your <br /> product, packaging and promotional materials. <br /> Continued Certification <br /> 1. NSF performs an annual audit of the manufacturing facility and in some cases <br /> authorized representatives. <br /> 2. NSF reevaluates and potentially retests products at least once every seven <br /> years. <br /> 3. NSF reviews and approves any product modifications. <br /> Subscribe to our mailing list <br /> to receive industry news,event and training information <br /> View Mailing List Archives ► <br /> http://www.nsf.org/servicesiby-industry/water-wastewater/onsite-wastewater/residential-wastewater-tr... 11/9/2018 <br />