ASSE recognizes the importance and benefits of input from a variety of industry stakeholders in order to develop the best standards and performance documents. Listing Evaluation Criteria (LEC) are Other Recognized Documents (ORD’s) that establish the initial rules for unique products in the marketplace. An LEC is an opportunity for new devices to gain a footing in the marketplace when combined with 3rd-party certification.
An LEC is valid for 5 years from publication date. At that point, the ASSE Product Standards Committee (PSC) will observe its market acceptance and decide the appropriate route for it in partnership with the original requester.
All public comments are reviewed after the end of the 20-day public review period by the PSC and are resolved to the best ability of the PSC and the commenter. Comments must include the following:
Submit public comments to staffengineer@asse-plumbing.org with the name of the LEC in the subject.
| LEC | Title | Comments Deadline | Scope |
|---|---|---|---|
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| Designation | Title | Released | Description |
|---|---|---|---|
| ASSE LEC 2002-2017 | Shower Filtration Fitting for Reduction of Chloramine | Feb 2017 | Devices are shower filters are designed to reduce contaminants typically found in potable water supply lines, such as chlorine and chloramine. The product improves the showering experience by reducing aesthetic contaminants from supply water. |
| ASSE LEC 2004-2019 | Drinking Water Treatment Systems Using Air as a Source | July 2019 | Atmospheric water generators are intended to be used to produce drinking water. Typical applications include areas where water is scarce or where water supplies are of unknown water quality. Critical components of these systems include a condenser, storage tank, and disinfection control techniques to address microbiological water contamination. |
| ASSE LEC 2006-2019 | Point of Entry Reverse Osmosis Systems | Sept 2019 | This covers contaminant reduction claims for POE RO systems used to treat drinking water. RO water treatment equipment reduce total dissolved solids, heavy metals, microbes, inorganics, and organic water contaminants. POE ROs are typically installed after the water meter in residences or businesses. |
| ASSE LEC 2008-2021 | Point of Entry Anion Exchange – Nitrate Reduction | Feb 2021 | The water treatment systems covered in this ASSE LEC 2008 shall be self-regeneration anion exchange systems designed to reduce nitrate from drinking water. The systems shall use anion exchange media that prevents nitrate dumping. Depending on the influent water quality, anion exchange systems, if not regenerated correctly, can dump or increase the amount of nitrate in the drinking water if other anions such as sulfates are exchanged by the resin. Non-regenerating residential water treatment systems designed to reduce nitrates shall be tested to NSF/ANSI 53. |
| ASSE LEC 2009-2021 | Backflow Preventer and Automatic Boiler or Chiller Filling Device with Pressure Regulating Management | Jan 2021 | Direct-type boiler and chiller fill valve assemblies with integral backflow preventer and system pressure regulator are used to control the inflow of water into heating and cooling systems to ensure sufficient system pressure. Devices protect the potable water supply against backflow due to backpressure and backsiphonage. Devices incorporate two independent check valves in series separated by a means of discharging to a drain by way of a valve and air gap, a means to automatically control flow based on a pressure range, and a means of atmospheric venting to allow drainage. Devices shall only be installed in the Inlet vertical up- outlet vertical down (VUVD) orientation. Check valves shall be force-loaded to a normally closed position. |
| ASSE LEC 2010-2020 | Proportional Flow Control Devices, with Protection from Cross-Contamination via Hydronic Water, for use in Drinking Water Installations | Oct 2020 | The purpose of proportional flow control devices, with protection from cross-contamination via hydronic water, for use in drinking water installations is to control the flow of potable water based on the pressure of hydronic water from a hydronic system. The device performs this hydraulically and has integral cross contamination protection between the potable and hydronic water. This device is typically installed in conjunction with a heat exchanger and a part of a hydronic system loop. This device consists of a single potable cold water supply inlet and outlet, and a single hydronic supply inlet and outlet, a means of dynamic flow control, an atmospheric vent, and two sets of three dynamic seals between the potable and hydronic flow paths. |
| ASSE LEC 2011-2022 | Legionella Reduction and Treatment Devices | Aug 2022 | Legionella reduction and treatment devices are designed to reduce the microorganisms in the genus Legionella (e.g., Legionella pneumophila) typically found in potable water systems. The devices reduce the number of the bacteria through inactivation and/or filtration. They can reduce or prevent the downstream bacterial colonization of a water system and thus ultimately the release of the bacteria into the product water. Devices are intended to be used at Point of Entry (POE) or Point-Of-Use (POU) in applications for hot or cold-water or both for drinking water, washing hands or showering. The device reduces the quantity of Legionella bacteria that exit the device. Major components may include a disinfecting chemical inlet, mixing chamber, thermal element, housing, filtration media, and ultraviolet (UV) light source. The performance requirements in this standard are for full systems and are not intended to apply to components (i.e., filters). |
| ASSE LEC 2012-2021a | Packaged Plumbing and Mechanical Systems for Continuous Microbiological Mitigation | June 2021 | LEC 2012 covers Packaged Plumbing and Mechanical Systems (PPMS), also known as skid systems, that are designed to inactivate and disinfect waterborne pathogens and microorganisms within hot water distribution systems from replicating and infecting humans. PPMSs combine devices that are typically located in a commercial or industrial building’s mechanical room or basement. These systems include a water heater and distribution mixing valve, or water heater with integral temperature control device, an ultraviolet treatment system that treats incoming and recirculating water, filters, an anti-scaling device, chemical injection connections, and a connection to drain. |
If you have a product that does not quite fit the mold of an existing standard or would like to know more about the process of developing an LEC and whether it is appropriate for you, please contact us at staffengineer@asse-plumbing.org.
