- Posted by
Is NSF Certification Important?
In the United States, almost every product in a commercial kitchen is NSF certified. For example freezers, sinks, ovens, ice makers, cutting boards, etc. all must be NSF certified. These standards ensure quality and safety in not only in restaurants and cafeterias, but in many other industries, as well.
The mission of NSF International (formerly the National Sanitation Foundation) is to protect public health and exists to provide third-party testing and validation of products available to the public. NSF standards are widely accepted by government regulatory bodies and many companies due to the thorough product testing required for a product to receive NSF certification.
NSF Certification for Ultraviolet Systems
In regards to UV water treatment, the NSF has established two optional certification classifications for NSF/ANSI 55 which helps manufacturers of point of entry (POE) and point-of-use (POU) ultraviolet systems verify claims that their systems disinfect contaminated water.
ESP Water Products sells ultraviolet water disinfection systems manufactured by VIQUA.
When a UV system is NSF certified, it means the UV system complies with the strict standards and procedures imposed by NSF including extensive product testing and material analyses. As the manufacturer, VIQUA is also subjected to unannounced plant inspections and regular re-testing of our products to maintain the NSF certification. It is not a one-time event but an ongoing review process. NSF certification is recognized by regulators at all levels from local and state to federal and international. The VIQUA line-up includes several UV systems that are NSF certified. You’ll see other industry markings on VIQUA products as well. These include CE and UL as market appropriate. Both of these communicate that the product is assessed before being placed on the market and meets safety, health and environmental protection requirements.( VIQUA statement on NSF Certification)
Class A Systems:
Class A systems (40 mJ/cm2) are designed to disinfect and/or remove microorganisms, including bacteria, viruses, Cryptosporidium oocysts and Giardia cysts from contaminated water to a safe level. These systems are not intended for the treatment of water that has an obvious contamination or intentional source, such as raw sewage. Class A systems are not intended to convert wastewater to drinking water. The systems are intended to be installed on visually clear water (not colored, cloudy or turbid).
While both certifications for Class A and B are rigorous, Class A systems include UV dosage and fail-safe requirements that go above and beyond those of Class B systems.
Class B Systems:
Class B Systems (16 mJ/cm2) are designed for "supplemental" bactericidal treatment of public or other drinking water that has been deemed acceptable for human consumption.
Basically, Class B systems may claim to reduce normally-occurring, nonpathogenic nuisance microorganisms, but cannot claim to disinfect microbiologically unsafe water.
Similarities and differences
Both Class A and Class B systems share strict requirements for safety of materials in contact with drinking water and for structural integrity of systems connected to a pressurized water supply. Both must include flow restrictors to assure that the UV dosage cannot drop below that which results from testing. Class A systems, however, require a higher UV dosage. ( WCP Online)
In addition, NSF/ANSI 55 requirements specify that Class A ultraviolet systems incorporate an alarm or fail-safe element into their design. Therefore, all Class A systems include sensors that provide an audible and visual indication that the system is not performing to Standard. In fact, during the Class A certification process, all UV systems are tested to ensure the UV sensor and alarm perform properly even during low-dosage conditions.
Although Class B systems are not required to have a UV sensor, if a class B system is equipped with a sensor, then it must meet the necessary requirements.
We are proud of the industry-leading VIQUA UV systems we carry here at ESP Water Products. We feel confident these systems have been submitted to the most rigorous certification standards in our industry. Because of careful testing, quality manufacturing, and industry-leading warranties, we continue to offer VIQUA UV systems to our ESP Water Products customers.
For a complete list of NSF water treatment standards, visit NSF.org.
If you have any questions about NSF testing/certifications, please call our customer support team at 877-377-9876.
If your home receives water from a city or municipal supplier, your water has been treated at a local municipal treatment plant. So you may be asking, "Why should I worry about additional water treatment if the water already been treated at a water plant?" Municipal water suppliers do their best to protect the public. But contaminants [...]
Improving Your Water is Simple! Not thrilled with the taste, odor or appearance of the water coming from your tap? We've been in the water treatment business for 25+ years and have discovered that it doesn't take rocket science to have great water. In fact, in just a couple of simple steps--we can help you LOVE YOUR [...]
Despite treatment at municipal water plants, contaminants may still be found in our water. The U.S. has some of the cleanest water in the world, but the ever-increasing threat of leaching pipes, corrosion, and plant power outages are very real causes for concern. The following contaminants may still be present in household drinking water: Pesticides and herbicides Pharmaceuticals Disinfection [...]
Boil Water Advisories: How a Business Can Stay Open Despite Water Issues (Boil Water Notice Business Solutions)
Every year, thousands of “BOIL WATER ADVISORIES” are issued in cities throughout the U.S. These “alerts” or “advisories” are issued when there is the actual or strong possibility of bacterial contamination in the drinking water. When the threat is large, like widespread contamination and power outages after a hurricane or even when the threat is [...]
WARNING: Don’t Drink or Cook with the Water Realizing that you don't have access to clean, safe water for making ice, brushing teeth, washing dishes, or food preparation is enough to make most of us panic. If anything, it certainly heightens our awareness of how important water is in our everyday activities. While being told not to [...]