In 2015, Pipe Restoration Technologies, LLC, parent company of the ePIPE LeadSmart technology, was contacted by a contractor hired by The Water Supplies Department of Hong Kong, after discovering that an estimated 30,000 public housing units and an undisclosed number of schools and private housing units were shown to have lead levels of well over the WHO cut off level of 10 ppb.
Investigation determined the source of the lead leaching was primarily attributed to the improper use of lead solder used on the copper water pipes.
Water samples were taken, some of which had lead levels of exceeding 500ug/l before the ePIPE coating was applied. Once the ePIPE process was applied, lead levels were found to be in compliance with the 10 ug/l requirement,testing at < 1ppb.