Articles & Case Studies


Posted: Tuesday 18th October 2016

Stirling Lloyd's Permare EPW Tropical system has passed rigorous new testing to allow the continued protection of the majority of Zamzam water storage structures, supplying water that in the Islamic faith is considered sacred, to the holy city of Makkah in Saudi Arabia.

The standards created by the Saudi Geological Survey (SGS) - set up by the Zamzam Studies and Research Centre (ZSRC) - ensure that the water used by the millions of pilgrims who visit each year retains the highest possible quality. The programme aims to revalidate and improve previous product approval processes associated with the Zamzam water facilities.

"The key requirements of the new programme is to provide durable internal protection to the concrete Zamzam water holding structures with suitable coatings without affecting water quality," says James Hopper, Stirling Lloyd Regional Sales Manager - Middle East. "Several previously approved coatings failed this new testing regime despite providing credible international certification."

A durable, seamless and liquid-applied coating, Permare EPW Tropical has provided internal protection on Zamzam water holding structures without the need for repairs or re-coating since 2004. Despite this track record, there was still a requirement to be retested and SGS set out stringent pass/fail criteria according to the highest international standards for all tanks.

The new testing regime reaffirmed that Permare EPW Tropical has absolute compatibility with potable water, ensuring its unique flavour, chemical composition and curative properties are retained. Further experiments, limited to the supplied material at the set experiment conditions, were carried out to test the material leaching at the maximum temperature of 50oC. The system also passed the requirements for not promoting the growth of aquatic micro-organisms.

Anis Ur Rehman, Sales Manager - Utilities, Stirling Lloyd Middle East, added: "It is safe to say that the Zamzam water supply is protected by a new and uncompromising testing regime which filters out substandard products, and Stirling Lloyd is pleased to be continuing to help protect a continuous supply of Zamzam water to serve the Kingdom and the millions of pilgrims from around the world."

Since providing 12,000m2 of high performance Permare EPW Tropical for the initial tanking and lining of the Zamzam water tanks, Stirling Lloyd has worked extensively on the protection of structures in Saudi Arabia including further Zamzam water tanks. Other past successful projects include the Buraidah Sewage Treatment Plant and water tanks and reservoirs in Buraidah, Medinah, Jeddah and Riyadh, as well as the High Point Reservoir, the world's largest underground reservoir where 1.2 million m2 of Permare EPW Tropical was applied.

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