Water Systems

Guarantee the quality, performance, and safety of water products and systems with NSF’s extensive range of certifications and services.

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Use of NSF consulting services or attending NSF training sessions does not provide an advantage, nor is it linked in any way to the granting of certification.

Municipal Water Systems and Products
Have your municipal water products and systems thoroughly tested and certified. This includes everything from water storage tanks and reservoirs to water meters and individual components.
Plumbing Products
Verify the compliance of your plumbing products with the necessary standards and plumbing codes.
Materials and Ingredients
Verify the compliance of materials and ingredients with both North American and international standards.
Water Filtration
Test and certify water filtration and treatment systems, tailored for municipal, residential, or commercial use.
Treatment Chemicals and Media
Ensure global regulatory compliance by obtaining certification for your water treatment chemicals and media. The safety of drinking water is inherently linked to the quality of chemical aids and filtration media employed in its treatment.
Onsite Wastewater and Water Reuse Systems
Ensure that your on-site wastewater treatment or water reuse units meet all regulatory requirements.
Pool and Spa Products
Test and certify your pool and spa equipment and water treatment chemicals to guarantee their adherence to national health, building, and construction codes.
Water and Wastewater Standards
NSF's consensus standards cover an extensive range of products for the water and wastewater industries to help ensure the quality and safety of these products in the marketplace.
Information Security Management Systems
Strengthen information security for your business, satisfy customer expectations and do your part in protecting the water sector from risk.
Quality Management Systems
Demonstrate to your customers, regulators and the public your commitment to quality by establishing and certifying your management systems.

Resources

How NSF Can Help You

Get in touch to find out how we can help you and your business thrive.

What’s New with NSF

NSF Welcomes Hanjun Kwon, Managing Director, APAC
September 14, 2026
Experienced business leader to drive sustainable growth, organizational development and operational excellence across the Asia-Pacific region.
Read the Story
NSF Welcomes Nicole Parent Haughey to Board of Directors
September 10, 2026
NSF's appointment of Nicole supports the organization's continued focus on long-term growth and transformation.
Read the Story
Thomas Vyles Honored With 2026 Walter F. Snyder Environmental Health Award
August 19, 2026
The award honors Walter F. Snyder, co-founder and first executive director of NSF, and pioneers whose work advances environmental and public health.
Read the Story
NSF Hosts First External Review Panel for ‘NSF/KWTC 555’ with Key Asian Water Authorities
August 3, 2026
Joint standard development gains momentum to enhance confidence in Asia’s water industry and advance drinking water safety.
Read the Story

Water Systems

Explore Our Solution Areas

Municipal Water Systems and Products

Plumbing Products

Materials and Ingredients

Water Filtration

Treatment Chemicals and Media

Onsite Wastewater and Water Reuse Systems

Pool and Spa Products

Water and Wastewater Standards

Information Security Management Systems

Quality Management Systems

Resources

EU-MHR Readiness Research Report

Trusted Water Safety, Backed by Science

UK Regulation 31: Frequently Asked Questions

How NSF Can Help You

What’s New with NSF

NSF Welcomes Hanjun Kwon, Managing Director, APAC

NSF Welcomes Nicole Parent Haughey to Board of Directors

Thomas Vyles Honored With 2026 Walter F. Snyder Environmental Health Award

NSF Hosts First External Review Panel for ‘NSF/KWTC 555’ with Key Asian Water Authorities