EPA's LT2 Requirement

MAC Water Technologies is working with Harmsco Filtration Products to meet the EPA’s Surface Water Treatment Rule’s (SWRT) Long Term (LT2). This 2015 requirement addresses Cryptosporidium treatment in municipal potable water plants that draw from Surface Water or Ground Water Under Direct Influence of Surface water (GWUDI).The MUNI is a new NSF-61 listed product with a pleated FDA borosilicate microglass with acrylic binder filter cartridge technology.


The MUNI is placed as the final filtration step before the distribution system. Compared with other LT2 compliant technologies, the maintenance is straightforward. The operator simply changes the filters when the pressure gauge reads 30 PSIG for LT2 compliance. Combined with a small footprint and affordable up-front on operating costs, rural water districts that produce 5 million gallons per day or less are a good fit for this technology.



As of November 2015 there are 83 installations in 18 states plus Canada, Bangladesh, and Egypt. Additionally, in 2013 MAC Water Technologies contributed on a study with the University of Missouri – Columbia and Klingner and Associates in IL for a yearlong test off the Mississippi River. We have received verbal approval from the State of Missouri for this technology and full sized projects are being designed for construction.


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