ePIPE protects Hong Kong residents from toxic drinking water

Posted: Tuesday 22nd March 2016

INNOVATIVE no-dig technology installed by Pipe Restoration Services (PRS) in the UK is helping tackle lead in water risks across the globe.

Water authorities in Hong Kong have used ePIPE technology to eliminate the risk of toxic lead leaching into its domestic water supply.

Routine tests found that 30,000 public housing units, private houses and schools had excessively dangerous levels of lead in the drinking water when tested at the tap.

Lead levels were 15 to 60 times higher than the limit deemed safe by the government of Hong Kong. Like the UK, Hong Kong has a lead cut off level of 10 micrograms per litre (ug/l).

Initial investigations determined the source of the lead leaching as the improper use of lead solder used on copper water pipes.

Lead is a cumulative poison and children are particularly vulnerable as it affects both their physical and intellectual development. Multiple claims of adverse effects of lead absorption in children were already making their way to the Hong Kong authorities.

An expert team using ePIPE technology worked with the Water Supplies Department of the Government of Hong Kong, Wo Hing Construction and Innopipe to prevent lead leaching into the clean water supply.

Larry Gillanders, director of PRS, said: "Lead is a dangerous toxin and no amount of lead is safe for human consumption. Hong Kong's Water Supplies Department reached out to their construction contractors for an answer, and they suggested the ePIPE in-place pipe lining technology."

The ePIPE process uses a lining material with a short 2hr cure time, the fastest in the industry, resulting in a quick return to normal service and little disruption.

Prior to work commencing the lead levels were tested at over 500 ug/l. On completion, lead levels met the 10 ug/l safety standard.

ePIPE is actively working with the Hong Kong water authorities to continue to reduce lead levels in drinking water to acceptable standards.

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