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Frequently asked questions

We work in a progressive technology field where things change day by day. Below we have gathered some information on safe water we hope might interest you.

The company was founded in 2013 in Lund, Sweden making it the earliest entrant into the UVC LED water disinfection market. Proof of concept was patented in 2013, with prototypes developed one year later and production of commercial solutions were up and running in 2015. The Generation II product was launched and CE certified in 2018. The Purify Flex is built on a new pending patent launched in 2019. Purify Mini and Purify Solo were launched in 2021 to meet demand for smaller flow point of use (POU) applications.

The founders, Dr Kenneth M Persson, Professor in Water Resources Engineering, Mr Ola Hansson, MSc, Dr Lars Montelius, Professor in Nanotechnology and Mr Tord Wingren, Tech Innovato, together with employees have >150 years of combined experience in key areas including water, healthcare, microbiology, nanotechnology and IT/telecom.

The company currently has solutions operational in Sweden, Norway, Spain, South Africa, Bangladesh, Pakistan, and Rwanda, and is ready for accelerated international expansion.

UVC-LEDs are solid state semiconductors used for a variety of applications, including disinfection and water monitoring. Light emitting diodes produce light when current flows through them. Depending on the band gap of the semiconductor, LEDs can produce photons at various wavelengths, including ultraviolet, visible, and infrared. Extensive research and development in the last decade has resulted in improved lifetimes and optical outputs, along with cost reductions.

UVC-LEDs have a number of additive benefits over conventional UV lamps. They do not contain mercury making them much safer to utilize, especially in applications where a mercury spill could lead to catastrophic consequences (e.g. medical applications). In addition, the small size of the semiconductors allows for a lot more design freedom to embed and integrate UV disinfection directly at the point of consumption (taps, faucets) or exposure (e.g. showers). Other benefits include an instant-on capability allowing for energy savings for intermittent applications.

Watersprint offers three product platforms - Purify Solo, Purify Mini and Purify Flex. Each platform has been carefully optimized for a range of target applications and associated water quality conditions.

  • Purify Solo has been designed primarily for integration into OEM applications such as water dispensers, and industrial and life science applications.
  • Purify Mini is a low flow product line designed for point of use (POU) drinking water applications. One of its unique features is the ability to open the disinfection reactor and access the optical system. This allows the user to access, maintain, and replace key components that are important for maintaining disinfection efficiency and enhances the overall sustainability of the product line.
  • Purify Flex is the original product platform introduced by the company in 2013. It targets higher flow rates in the Point of Use (POU) range and is built with materials of equivalent quality as high end plumbing products. One of the key target applications for this system is Legionella control in hospitals, sports centers, schools and apartment buildings.

All three platforms feature a unique combination of architecture, materials, mechanics, fluid dynamics and intelligent software that balance affordability and features required for each target segment. Please see the product data sheet for more details on the specifications for each product line.

Watersprint systems have been designed to provide a high level of disinfection under a range of flow rates and water quality conditions. The systems have been extensively third party tested under a range of conditions providing greater assurance that it will perform in mission critical applications. Please see the product data sheet for more information on the inactivation level achieved under these conditions. Watersprint experts can assist you in selecting the optimal system for your application.

You do not always need to install a filter immediately prior to the system as UV system performance is very dependant upon incoming water quality.  In many cases, UVC LED systems are installed for secondary disinfection (e.g. Legionella) in already treated municipal water.   In this situation, an upstream filter is unlikely to be required.   Please  see the product data sheet for each product line to determine the recommended influent water qualities (e.g. incoming turbidity and UV transmittance).  If your application does not meet the minimum requirements, you may need to install a filter upstream of the unit.  Watersprint experts can assist you in determining whether filtration is required.

This is a question that has been contemplated since the formation of Watersprint in 2013! Watersprint is the most capable supplier in terms of understanding “Internet of Things” IOT enablement. Watersprint units add operational intelligence to existing solutions and applications, real time monitoring with alarm, maintenance and statistics online and alarms via SMS and e-mail.

The most simple and effective way to determine if a unit is working is a visual status LED on the unit. The visual status LED indicates when disinfection is active, providing reassurance to the user that the water has been disinfected. In addition to this feature, optional external LED status signals and flow sensors can be utilized for more comprehensive UV dose monitoring strategies. Watersprint experts can assist you in choosing the right solution in this area.

Watersprint engineers and scientists have been working since 2013 to carefully select materials and design robust systems that meet our target users expectations for product longevity. We quickly learned that expectations vary according to applications and segments. As a result, our products offer a range of UVC LED lifetimes optimized for the needs of users in key target segments. UVC LED life spans range from 5000 to 15,000 operating hours depending upon the product platform. A key distinction that must be considered when examining lifespan is that we are quoting actual operating hours. UVC LED systems may be operated on an intermittent basis. Please see the product data sheet for each product line for additional information on this topic.

Power consumption varies by product line and operating conditions. Please see the product data sheet for additional information on power consumption for each of the product platforms. When equipped with a flow sensor, Watersprint units may be operated on an intermittent, on-demand basis which significantly reduces power consumption compared to conventional mercury lamp based units which cannot be operated on an intermittent basis.

Watersprint products are designed to be relatively maintenance free. They use state-of-the-art UV-LEDs, meaning there are no mercury bulbs to replace.

The Purify Mini has a unique feature compared to similar UVC LED systems. This is the ability to open the disinfection reactor and access the optical system. This allows the user to access, maintain, and replace key components that are important for maintaining disinfection efficiency. A visual status LED will provide a signal to the user to indicate when it is time to exchange these components. The components including the simple tools that are required to exchange them are available as a kit from Watersprint.
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