NSF/ANSI 46:  Wastewater Treatment System Components and Devices

  • Overview
  • Benefits of Certification
  • Why Work With NSF?
  • Certification Process

NSF/ANSI 46 evaluates the performance of wastewater treatment system components and devices such as grinder pumps, septic tank effluent filters, chlorination devices and UV disinfection devices.

NSF/ANSI 46 establishes minimum material, design, construction, product literature and performance requirements for components and devices used in handling, treating, recycling, reusing or disposing wastewater. Components and devices covered by this standard are intended for use with greywater, blackwater or both. The standard includes general requirements appropriate to all technologies and specific requirements for individual product categories.

Benefits of Certification

Certification to NSF/ANSI 46 can provide access for your products in the onsite residential wastewater market, where regulation or manufacturer requirements demand certified components or devices.

Certification also allows your company to:

  • Distinguish your product in the marketplace by demonstrating its performance through independent evaluation
  • List your product and company in our online directory of certified treatment systems
  • Use the NSF certification mark on your systems and in your promotional materials

Why Work With NSF?

NSF International is one of the most recognized and trusted names in onsite wastewater systems certification with over 40 years of experience in the industry. We create standards and protocols, test and certify products and provide inspector accreditation. Our services deliver confidence to consumers, assurance of performance to public health officials and market access for product manufacturers in the onsite wastewater treatment industry.

We provide a comprehensive package of product standards for the residential onsite wastewater community. In addition to NSF/ANSI 46, we have also developed NSF/ANSI 40 and 245 for residential wastewater treatment systems, NSF/ANSI 240 for drainfield trench products and NSF/ANSI 41 for non-liquid saturated treatment systems.

Products that comply with the requirements of the standard may use the NSF mark, one of the best known and trusted certification marks in the wastewater industry.

Certification Process

Initial Certification

  1. Your company submits an application.
  2. NSF reviews general information, drawings and design specifications of the treatment system.
  3. NSF installs the unit at a test facility and performs thorough testing.
  4. NSF issues a final test report.
  5. NSF reviews product literature, data plates, service labels and related documentation.
  6. NSF performs an initial audit of the manufacturing facility.
  7. Upon gaining certification, your company may use the NSF mark on your product, packaging and promotional materials.

Continued Certification

  1. NSF performs annual audits of the manufacturing facility and in some cases authorized representatives.
  2. NSF reevaluates and potentially retests products at least once every seven years.
  3. NSF reviews and approves any product modifications.

Contact NSF International

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