Five considerations for upgrading an existing UV Pure system

Over 18,000 UV Pure systems are operating worldwide – with many providing years or even decades of reliable disinfection performance in potable, wastewater, and reuse applications. Over time, requirements for some sites can change, leading operators to evaluate different disinfection options to cope with higher flow requirements, changing water quality, emerging pathogenic threats or other factors.

The introduction of UV Pure’s new Hallett product line addresses these upgrade challenges with new technology, higher-capacity flow rates, and lower power consumption while continuing to provide the low-maintenance, highly reliable performance that operators trust from UV Pure.

As the UV Pure team prepares to ship the first of these new Hallett systems in early 2019, we share some answers below to common questions about the new units.

How are the new Hallett units similar to UV Pure’s proven Hallett 15xs and Hallett 30 systems?

The new Hallett units are still powered by UV Pure’s patented Crossfire Technology™, which includes automatic self-cleaning wipers, smart sensors, and built-in purging to prevent fouling of the quartz sleeve by mineral scaling and biofilm. This makes Hallett systems up to 10 times more effective in difficult water applications than conventional UV systems.

How are the new Hallett systems different from existing Hallett units?

The new Hallett units have been completely redesigned with better features and operability. The new systems can handle flow rates of up to 100 gpm (378 L/min) per unit while continuing to provide robust, reliable disinfection under the toughest conditions. For higher flow applications, multiple Hallett units are connected to achieve flow up to 1 MGD (3,785 m3/day).

What happened to UV Pure’s Upstream products?

Upstream systems will be discontinued in early 2019, but UV Pure will continue to offer replacement parts and full product support for years to come. New Hallett NC systems will replace Upstream models for disinfection applications that do not require product certification or validation.

How does UV Pure ensure its systems provide the appropriate level of public health and environmental protection?

UV Pure is offering a new Hallett system that is validated to the US Environmental Protection Agency’s (EPA) UV Disinfection Guidance Manual (UVDGM) protocols, as well as to the National Water Reuse Institute’s (NWRI) UV Disinfection Guidelines for Drinking Water and Water Reuse.

What type of warranty is available for replacement lamps?

UV Pure continues to offer a 12-month limited warranty for LPHO lamps, while amalgam lamps in the new Hallett 1000 model will be covered for 16 months.

Learn More:

Click here or below to download a brochure that answers your questions about the new Hallett, or please contact us here.


Testing the waters at WEFTEC 2018 with UV Pure’s new low-maintenance disinfection systems

Most water and wastewater system operators can’t believe that UV Pure Hallett systems can operate for months, or even years, without manual cleaning – a time-consuming process typically required for conventional ‘light-in-a-pipe’ UV systems.

This was one of the key takeaways from UV Pure’s product session at WEFTEC this year, which was attended by over 20,000 water industry professionals in New Orleans, Louisiana, from September 29 to October 3, 2018.

UV Pure’s Service Manager, Alex Zammit, led a technical session at WEFTEC, which showcased how the company’s patented self-cleaning system removes scale and buildup from inside the quartz sleeve. Although the session was initially expected to last half an hour, it was extended to over an hour as Alex answered a flurry of questions about Crossfire Technology™ and how it helps dramatically reduce time and money spent on system maintenance.

WEFTEC 2018 UV Pure

UV Pure’s sales representatives My Linh Le Thi and Alok Paliwal were also in the thick of the action at the event. They spoke with attendees one-on-one and demonstrated the one-minute lamp change that’s enabled by the unique vertical air-mounted lamp design of the Hallett systems.

Clearford Koester Canada’s VP of Sales and Marketing, Peter Rupcic, accompanied the team as a key business partner and spoke with attendees about the strengths of the business partnership between Clearford and UV Pure. This includes the ability to design, build, and operate complete water and wastewater treatment facilities for small communities that incorporate UV Pure disinfection.

Attendees at WEFTEC were also interested to learn more about the new support program that UV Pure will be launching in the coming months. This program will offer training sessions and dedicated resources for clients and channel partners. Stay tuned for more details!


For service inquiries, we welcome you to contact Alex Zammit, here.

Our team will be happy to assist you for sales in:

  • Ontario, Manitoba, and Eastern and Midwest USA, contact: Alok Paliwal
  • Quebec, Atlantic Canada, Western Canada, and Western USA, contact: My Linh Le Thi 

Lighting the path to safer water with a new high-performance Hallett series

On October 1, UV Pure will launch its new reliable, self-cleaning Hallett™ series at WEFTEC 2018 in New Orleans. UV Pure’s new Hallett 1000 model joins the existing family of Hallett systems to provide advanced UV disinfection for potable water, wastewater, water reuse, and rainwater harvesting in municipal, industrial, and commercial applications.

The new Hallett family includes re-designed models from Potable, Wastewater, Reuse and NC product lines.

Hallett NC replaces the Upstream™ product line for applications that don’t require formal certification to NSF/ANSI standards or performance validation under US EPA and NWRI testing protocols.

UV Pure’s new Hallett Potable models provide the highest level of reliability and protection for public and private drinking water systems, including the most challenging applications for hard and mineral-rich water. Multiple smart sensors continually monitor UV dose, lamp intensity, and UV transmittance (UVT), and they can trigger an alarm or shut down the system entirely if treated water quality does not meet specified thresholds.

The Hallett PN series includes models that are certified to NSF/ANSI standards (pending), while Hallett 1000P systems will be validated to meet the US Environmental Protection Agency’s (EPA) globally accepted protocols for UV water disinfection. Water industry professionals rely on these designations for assurance that UV disinfection equipment provides the highest level of pathogen inactivation, public health protection, and regulatory compliance.

UV Pure’s new Hallett Wastewater product line ensures effective disinfection of domestic and industrial wastewater with UVT as low as 35% to minimize pre-treatment requirements. As with all of our systems, the new Hallett W-models incorporate a unique vertical, non-contact design with dual air-mounted UV lamps in an elliptical-reflector reactor chamber to concentrate sterilizing UV energy on wastewater from 360 degrees. The quartz sleeve continually cleans itself with an automatic wiper that prevents the buildup of biofilm and mineral scaling. The Hallett design enables lamp changes to be completed without the risk of coming in contact with wastewater in the quartz sleeve, and in much smaller spaces compared to conventional light-in-a-pipe systems.

UV Pure is also launching a new Hallett Reuse product line for disinfection of reuse water and rainwater. These Hallett R-models will be validated to provide an effective UV disinfection dose for low-UVT water from greywater and rainwater collection systems, and other reuse water from commercial and industrial applications.

Hallett 1000R systems will be validated to meet the National Water Research Institute (NWRI) and EPA protocols for UV water disinfection for UVT as low as 35%. This level of treatment assures public health protection under challenging conditions and significantly outperforms many conventional UV systems, which are often rated effective only for cleaner water with UVT above 75%.

New Hallett systems are still powered by UV Pure’s patented Crossfire Technology™

This technology features an automatic self-cleaning mechanism that continually removes minerals and biofilm from the quartz sleeve, thereby preventing fouling, maximizing UV dose delivery, and virtually eliminating the need for manual cleaning. Crossfire Technology also integrates multiple smart sensors that continuously monitor UV dose, lamp intensity, and net UVT for optimum performance.

The new Hallett systems will be launching at WEFTEC 2018.

  • RSVP today to attend one of our demo huddle sessions or
  • Visit us at booth #5548

Discover the NEW Hallett 1000: Smart new features, same trusted name

Operators can now virtually eliminate concerns about maintenance, active supervision, and performance reliability for on-site UV disinfection at commercial, industrial, and municipal water or wastewater plants up to 1 million US gallons per day (3,785 cubic metres per day). How?

UV Pure’s new Hallett™ 1000 systems have more capacity than ever, plus the performance, power, and smart technology you expect from UV Pure.

The new Hallett 1000 model builds on the success of UV Pure’s proven Hallett 30 system and patented Crossfire Technology™. This technology uses a unique elliptical reflector design with dual air-mounted lamps to deliver a high UV dose and target pathogens from 360 degrees.

New and improved features of the Hallett 1000

Longer lamp life:

Each Hallett 1000 unit is equipped with high-output, long-life low-pressure high-output (LPHO) amalgam UV lamps that are powered by a UL-certified pre-heat ballast with a soft start. This helps extend their operating life to provide maximum UV output for up to 12,000 hours, or approximately 16 months.

Larger capacity system, same reliable disinfection:

The new Hallett 1000 units can handle flow rates of up to 100 gpm (378 L/min) per unit while continuing to provide robust, reliable disinfection under the toughest conditions. For higher flow applications, multiple Hallett 1000 units are connected with a prefabricated pipe manifold to achieve flow up to 1 MGD (3,785 m3/day). This modular design provides built-in redundancy and ensures the highest level of protection since one or more Hallett systems can be shut down for service while others continue to operate.

Space-saving, easy-access vertical design:

The new Hallett 1000 systems incorporate a newly designed aluminum outer shell with side hinges that can easily be flipped open to access the internal components. This design even further reduces the Hallett installation space requirements on a wall or as part of a vertical-mounted manifold system, and allows operators to quickly change lamps without having to pull them from the fragile quartz tube.

Contact us to discuss how UV Pure’s new Hallett systems can help you meet your water disinfection needs.

How UV Pure added to the success of 2018 Solar Decathlon participant

Sole Canadian team in Chinese sustainable house competition adds UV Pure system to provide safe water.

A team of students, known as Team MTL, from McGill University and Concordia University recently participated in the 2018 Solar Decathlon, a competition that challenged participants to build a sustainable house using cutting-edge technologies.

The group, known as Team MTL, designed a house that uses a point-of-entry (POE) treatment UV disinfection system to treat the main water supply and protect residents from waterborne pathogens.

To ensure that they would never have to worry about water quality, the students wanted a UV disinfection system that provides a high level of safety for the water that is supplied throughout the house.

UV Pure donated a Upstream NC 15-50 disinfection system to support the experiential learning opportunities provided by the competition and improve the water quality of the main water supply.

The Upstream NC 15-50 system incorporates dual smart UV sensors that continually monitor UV lamp output and water quality, ensuring the highest level of treatment and public health protection. If either of these parameters does not meet the set specifications, the system will sound an alarm, notify the unit owner, and automatically shut down.


“We are grateful to UV Pure for supplying us with an Upstream NC 15-50 system for our home,” says Ben Wareing, Architecture Lead of Team MTL. “The system consistently provides a clean water supply to the house, ensuring the wellbeing of the inhabitants.”


Once treated with UV Pure’s disinfection system, the water is supplied to low-flow plumbing fixtures and appliances throughout the house such as the dishwater and washing machine.

This approach supports Team MTL’s water management strategy, which prioritizes conservation and reuse to help homeowners reduce potable water demand.

The 2018 Solar Decathlon took place in Dezhou, China from August 2 to August 19. A total of 48 universities from 10 countries around the world were represented in the 20 teams that competed in the Solar Decathlon.

At the end of the competition, teams were ranked in a number of categories, including: innovation, engineering, architecture, market appeal and communications.

Congratulations to Team MTL for placing first in the architecture, market appeal and communications competitions, and  third in the innovation and engineering competitions!

Team MTL

How to earn LEED points with rainwater harvesting

Are you considering LEED certification for a new building?

If so, a rainwater harvesting system with UV Pure disinfection can help you earn points across several categories for your green building project.

Disinfection before distribution is an important part of a rainwater harvesting system as it inactivates harmful microbial pathogens that can contaminate rainwater as its collected and conveyed to storage. UV Pure’s products are validated to provide an effective UV disinfection dose in water with UVT as low as 50%. This level of treatment assures public health protection under challenging conditions and significantly outperforms many conventional UV systems, which are often rated to be effective for cleaner water at UVT above 75%.

UV Pure systems can achieve this level of treatment because Crossfire Technology® incorporates:

  • a dual-lamp, reflective disinfection process that provides 2.4 times the dose of conventional light-in-a-pipe systems, and
  • targets pathogens from 360 degrees to eliminate shadowing.
  • Each unit is also equipped with a self-cleaning system that prevents fouling of the quartz sleeve from minerals and enables it to be effective in water 10 times harder than conventional systems.
  • The self-cleaning system eliminates the need for unit owners to shut down, disassemble and manually clean the quartz sleeve and avoids the use of potentially hazardous acid.

A rainwater harvesting system equipped with UV Pure disinfection can help you gain LEED points across several categories, including:

Indoor water use reduction (up to 6 points):

New buildings can earn points for reducing potable water demand indoors with alternative sources of water, including treated rainwater.

Outdoor water use reduction (up to 2 points):

New green building projects earn a point by installing an efficient landscape irrigation system that reduces the site’s potable water demand by 50% from the calculated baseline for a site’s peak watering month. New sites can also obtain an additional point by reducing the site’s water requirements by an additional 30% using alternative water sources such as rainwater.

Rainwater management (up to 3 points):

New buildings can receive points for reducing runoff and improving water quality with low impact development (LID) and green infrastructure (GI). By adding a rainwater harvesting system, building owners can treat and reuse rainwater onsite, which helps the site reduce its potable water demand.

To learn more about water credits for obtaining LEED certification, click here.

We look forward to having you contact us to discuss your challenging UV disinfection needs.

New amalgam lamps improve UV treatment and performance

Effective treatment and reliable performance are two of the top factors operators consider when evaluating the effectiveness of UV lamps, since they often provide the final step, and sometimes the only step, in water disinfection.

That’s why UV Pure’s new high-capacity Hallett systems are equipped with high-output, long-life amalgam lamps that ensure they can consistently and reliably achieve their performance goals under the toughest conditions.

Longer lamp life

Each of UV Pure’s amalgam lamps are powered by a UL-certified pre-heat ballast, which provides a soft start to the amalgam lamps. It also increases their operating life by 65% to provide maximum UV output for up to 12,000 hours, or approximately 16 months.


Wider range of operation

UV output may decline when conventional light-in-a-pipe systems are exposed to cooler temperatures or extreme heat.

Compared to conventional systems, the new amalgam lamps provide greater thermal resistance, which enables them to produce the highest dose of germicidal UV-C light in a wider range of temperatures.


Proven reliability through third-party testing

UV Pure amalgam lamps are verified to meet stringent performance specifications. This validation assures operators that each UV Pure amalgam lamp will achieve the National Water Reuse Institute (NWRI) UV disinfection guidelines for wastewater treatment and reuse to provide the highest level of public health protection.

The units are also being validated to the Environmental Protection Agency’s (EPA) standards to treat various pathogenic microbes, including adenovirus.


System treats tough water conditions

The Hallett system, with Crossfire® technology, mounts UV lamps in air rather than inside the quartz sleeve and employs elliptical reflectors to reuse and reflect UV light energy.

This design targets pathogens from 360 degrees and intensifies the UV dose – enabling the Hallett systems to handle treated effluent that is 10X worse than conventional light-in-a-pipe UV systems.

 Advantages of UV Pure’s Crossfire technology over conventional UV systems:

The benefits of genuine UV Pure lamps

A UV lamp is a UV lamp… right? Perhaps it’s not as simple as that, especially when it comes to protecting public health from harmful waterborne pathogens.

UV lamps often provide the final step (and sometimes the only step) in water disinfection, so it’s critical that they are tested and certified to operate properly within your UV Pure system and to consistently deliver the required UV dose.

We’ve learned that there are non-genuine UV Pure lamps available, but installing these lamps can adversely affect treated water quality and system operation.

Major risks that you and your UV Pure system can encounter when attempting to use non-genuine lamps:

  1. Non-genuine UV lamps are not tested by UV Pure, or verified by third-party certifiers, to meet stringent performance specifications or water quality certification such as NSF/ANSI 55—putting the health and trust of those that depend on safe, clean water at risk.
  2. UV Pure lamps are designed and validated to provide maximum UV output for 9,000 hours, or about a year. Non-genuine lamps may not provide the same assurance.
  3. UV Pure smart controls and sensors may not perform as designed. These systems monitor and alert operators when lamps are approaching end of life and when lamp output drops below optimum performance.
  4. System water quality certifications will become invalid as UV Pure can’t assure system performance when non-genuine lamps are in use, or even after they have been removed.
  5. Sensitive electronic components such as control boards and ballasts may be adversely affected by non-genuine UV lamps, causing poor system performance, reduced component life or sudden component failure.
  6. Damage to UV Pure systems caused by non-genuine lamps cannot be claimed as a warranty repair and any remaining warranty will be void.
  7. Non-genuine lamps are not covered by UV Pure’s industry-leading one-year warranty.

How can you tell if a UV lamp is genuine?

Genuine UV Pure lamps are marked with the UV Pure logo and the UV Pure web URL at the base.

To learn more about the risks of non-genuine UV lamps and how to identify them:

To order replacement UV Pure lamps and to arrange for installation services, please contact your local UV Pure dealer.

What you need to know about UVT when selecting a UV system

What is UVT:

UVT – Ultraviolet transmittance – is one of the most important performance parameters to consider when selecting a UV system for your application.

  • UVT is a measurement of the UV energy, at precisely 254 nanometres wavelength, that passes through the water column.
  • UVT is usually expressed as a percentage, with a higher number corresponding to ‘clearer’ water, which allows more penetration of UV radiation for the deactivation of pathogens.

‘Clearer’ doesn’t necessarily mean clear to the eye.

Some UV-absorbing chemicals appear transparent but can drastically reduce the UVT of water!

When selecting UV disinfection for any application – whether potable water, rainwater harvesting, wastewater, or water reuse – it is most important to understand the UVT of your source water and any seasonal or other changes that might affect the effectiveness of UV disinfection.

This is especially important for surface water sources where spring runoff, heavy rain, falling leaves, and airborne debris such as pollen can have a major impact on water conditions.

UV Pure’s products are validated to provide an effective UV disinfection dose in water with UVT as low as 50%.

This level of treatment assures public health protection under challenging conditions and is significantly better than many conventional UV systems, which are often rated to be effective for cleaner water at UVT above 75%.

UV Pure systems can achieve this level of treatment because Crossfire Technology® incorporates a dual-lamp, reflective disinfection process that provides 2.4 times the dose of conventional light-in-a-pipe systems and targets pathogens from 360 degrees to eliminate shadowing. Each unit is also equipped with a self-cleaning system that prevents fouling of the quartz sleeve from minerals and enables it to be effective in water 10 times harder than conventional systems.

How Crossfire Technology® works:

What to check when restarting UV Pure units for seasonal water systems

Are you getting ready to restart a UV Pure system at your seasonal property? Each UV Pure system is designed to make restart a simple process – almost as simple as flipping on the power and opening the water valve. To ensure optimum performance of your system, seasonal startup is a good time to perform a few simple inspections.

Before restarting your UV Pure system:

  1. Inspect the quartz sleeve for cracks, breaks and fouling.
  2. Inspect the reflector panels for damage.
  3. Inspect lamps for cracks and breaks.
  4. Inspect quartz around the filaments for discolouration at the ends, which indicates a bad lamp or a possible ballast issue.
  5. Reconnect all fittings and close all valves.
  6. Slowly apply water pressure and inspect the unit for any signs of leaks or loose plumbing joints.
    • If any components in steps 1 to 6 require attention, consult your manual or contact a qualified UV Pure service representative.
  7. When the system is fully pressurized, turn on the UV Pure system and allow the lamps to reach full power. This may take up to 24 hours.
  8. Once operational, flush water through the unit for at least five minutes.

Importance of having UV lamps:

We recommend making spare lamps available at each site to ensure uninterrupted system operation. UV lamps have a limited lifespan and should be changed after 12,000 hours of operation.

Your UV Pure system will alert you when:

  • the lamps require changing as they approach end of life, or
  • when lamp output has dropped below the optimum operating level. A menu screen in the LCD display of Hallet® and Upstream™ systems also shows the remaining lamp life.

Whenever changing lamps:

  • use only genuine UV Pure lamps to ensure the system meets certified performance standards and to avoid adverse effects to sensitive electronic components.

To understand all the benefits of using genuine UV Pure lamps, read this post.

For more information about restarting UV Pure systems, please see your instruction manual.

To order spare lamps or other parts, or to arrange for service of your UV Pure system, contact your local UV Pure service provider.