Onsite Wastewater and Water Reuse Systems
Ensure that your on-site wastewater treatment or water reuse units meet all regulatory requirements.
NSF evaluates all residential wastewater treatment systems, regardless of treatment technology, in test facilities throughout the U.S., Canada and Europe.
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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.
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How NSF Can Help You
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What’s New with NSF
NSF Achieves European Accreditation for Drinking Water Product Certification Ahead of 2027 EU Deadline
July 22, 2026The ISO/IEC 17065 accreditation from BELAC complements NSF’s testing capacity, enabling end-to-end support for EU Drinking Water Directive (DWD) readiness ahead of the January 2027 deadline.