Onsite Residential and Commercial Water Reuse Systems

Innovative product designers, engineers, and manufacturers have begun developing onsite wastewater treatment technologies to treat and reuse wastewater. These decentralized treatment systems will offer a sustainable, energy-efficient, and practical solution for protecting our water supply.

Some feel uncertain and skeptical since these newer technologies are not widely known as an alternative to discharge-only systems. To help address the uncertainty and skepticism about these reuse systems, NSF/ANSI Standard 350: Onsite Residential and Commercial Water Reuse Treatment Systems was developed. This standard sets guidelines and requirements for treating onsite wastewater for reuse applications and methods to meet Log Reduction Targets (LRTs) to yield credits for viruses, bacteria, and protozoan removal. This is the first standard to comprehensively evaluate wastewater reuse technologies with water treatment quality criteria, public health initiatives, and environmental concerns in mind.

When certifying these types of technologies, NSF verifies that all design, construction, and performance requirements of the standard have been met through initial technical reviews, rigorous testing of influent /effluent, and inspection to ensure that the reused water meets stringent water quality criteria for its designated end uses.