Webinar: COVID-19 Updates for NSF International’s Water Certification Programs
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Onsite Wastewater Systems
NSF has over 40 years of experience in onsite wastewater treatment systems.
Our standards group facilitates the development of standards and protocols, and our global water program tests and certifies products. 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.
Our Services
Nitrogen Reduction
NSF/ANSI 245 defines total nitrogen reduction requirements to meet the growing demand for nutrient reduction in coastal areas and sensitive environments.
Onsite Water Reuse
More than 97% of water on earth is salty and nearly 2% is locked up in snow and ice. That leaves less than 1% of water to grow crops, cool power plants and supply drinking and household water.
Amalgam Separators
Dental amalgam is a durable metal mixture that may contain mercury and is used to restore teeth.
Residential Onsite Systems
NSF/ANSI 40 is a standard for residential wastewater treatment systems with rated capacities between 400 and 1,500 gallons (1,514 and 5,678 liters) per day.
Non-Liquid Systems
NSF/ANSI 41 certifies composting toilets and similar treatment systems that do not use a liquid saturated media as a primary means of storing or treating human excreta or human excreta mixed with other organic household materials.
Wastewater Treatment System Components and Devices
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.
Drainfield Trench Product Sizing
NSF/ANSI 240 establishes minimum material, design, construction and performance requirements to evaluate dispersal drainfield products used as alternatives to traditional stone or gravel trenches.
Field Performance Verification
NSF/ANSI 360 establishes consistent site selection, sampling, laboratory analysis and data evaluation methods for obtaining field performance results for onsite wastewater treatment systems.
Wastewater Protocols
NSF protocols are similar in many ways to NSF/ANSI standards, but do not undergo review and approval by an NSF joint committee.
News and Events
NSF International Staff Takes Part in NEHA Conference
July 23, 2019
Left to right: David Dyjack, NEHA; 2019 Snyder Award winner LCDR Katie L. Bante and Kevan Lawlor, NSF International.
Several NSF staff members participated in the National Environmental Health Association (NEHA)’s annual conference in Nashville, Tenn. the week of July 8. Our CEO presented an award and received an award, we presented a scholar intern award, two staff members gave educational sessions and we sponsored the NEHA president’s reception.
Second FOG Prevention Conference Draws Diverse Crowd and Spurs Important Discussion
March 12, 2018
In February 2018, NSF International hosted its second annual Fat, Oil and Grease (FOG) Prevention Conference, bringing together a range of industry professionals from plumbing inspectors and consultants to engineers and municipal city officials.
NSF International Appoints Dave Purkiss Vice President of Global Water Division
February 19, 2018
A 30-year veteran of NSF International, Purkiss has deep expertise in water treatment and distribution systems
NSF International Renews Partnership With EPA to Minimize Decentralized Wastewater System Risks
January 17, 2018
Continued partnership aims to protect water quality and human health by promoting public awareness of onsite septic system maintenance issues and providing training, certification and education resources