Shares in water purification company HaloSource (LON:HALO) have dropped over 30 percent this morning after a trading update stated ‘operational challenges’ have prevented fulfilment of customer orders.

In a statement the company said, “we anticipate that Drinking Water revenues will be impacted negatively during the second half of 2015. However, the Company is confident that these production delays will in no way impact the marketplace demand for its class-leading HaloPure(R) disinfection technology for 2016 and beyond.”

HaloSource create water purification techniques that serve people and preserve the planet, and works with scientists and industry experts across the globe in search of new ways to improve water quality.

HaloSource has a 52 week range between 11.65 and 24.80, and is currently trading down 33.7 percent at 12.76 pence per share. (0937GMT)