Springhill Water Services Ltd is now based at Moderna Business Park in Mytholmroyd having outgrown its offices in Wharf Street, Sowerby Bridge.
Yorkshire Forward has already marked it out as a high-growth firm.
The company, a leading private water supply specialist in the north and Scotland, serves homes and businesses which depend on this type of water source - which bubbles up from the surface as a spring - installing equipment, trouble-shooting and treating water.
Springhill, set up by directors Geoff Nemec, Matt Wilson and Karen Wain, started out at Springhill Farm in Triangle, which is on a private water supply.
Mr Nemec, a chartered water and environmental manager and chairman of UK Water Treatment Association for private water supply, said Calderdale was unique as it had so many of these private water supplies. Around 3,000 houses in the borough use this type of system.
And around one per cent of the UK population is served this way - that's around 600,000 people.
"People in remote places can't pipe the water in so they have got to rely on getting the water out of the ground," said Mr Nemec.
"There are so many of these springs in Calderdale." It made the land ideal for mill owners.
Springhill's engineers carry out site surveys and use equipment such as booster pumps to get water more quickly and filters, PH correctors and ultra violet light to kill bugs and purify.
"You can't just drink the water raw because there is animal faeces everywhere," said Mr Nemec. "And a particular problem in Calderdale is the water is acidic, which can turn blonde water green."
New legislation means people can be fined £2,000 or even be sent to prison for not purifying the water.
Springhill also supplies and installs borehole pumps which go down 60 metres, as people look to access the water more easily in dry weather. Several sports grounds are looking to install them to irrigate the land.
Mr Wilson, a renowned inventor, who is one of the top water treatment engineers in the country, has invented various equipment, including one device recently which is being snapped up by major water treatment manufacturers.
Springhill also installs huge systems, for the likes of National Trust and caravan sites, working across the north and Scotland.