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.


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.

Farm provides safe drinking water to livestock with help of UV Pure systems

System Design Specifications
  • Application: Potable water treatment
  • Location: Cooper Farms – Ohio, USA
  • Commissioned: 20019
  • System: 4 – UV Pure Upstream NC 15-50
  • Flow: 15 to 60 gpm (57 to 227 L/min)
  • Minimum UV dose: 40 mJ/cm2
  • Minimum UVT: 50%

Inadequate groundwater supplies prompted Cooper Farms in Ohio to begin harvesting and reusing rainwater in 2009 as a supplement to its potable water supply and to reduce its demand on the local groundwater system.

Since one of the key uses for the treated rainwater is to provide drinking water for livestock, Cooper Farms started exploring options to implement a multi-barrier treatment process with UV disinfection that could provide pure, safe water. Rainwater can acquire a multitude of contaminants and pathogens as it is collected, so treating it to potable water quality standards is essential for preventing disease outbreaks and death among livestock.

Upon the recommendation of Flag City Water Systems, a local UV Pure representative, Cooper Farms installed a purification system that includes chemical-free UV Pure disinfection for its ability to handle low UV transmittance (UVT) conditions, a typical characteristic of the rainwater, which is collected and stored in a retention pond at the site.

UV Pure disinfection enhances system performance and provides peace of mind

“We worked closely with UV Pure to design and install a water treatment system that meets Cooper Farms’ needs,” says Brad Longberry, CEO of Flag City Water Systems. “Even after pond water is filtered, UVT can still be quite low, so the ability to consistently deliver a high UV dose under these conditions was a very important consideration for us when selecting UV Pure’s Upstream systems with Crossfire Technology for this application.”

The system at Cooper Farms is designed to treat source water to a potable standard. Currently, a small amount of well water is pumped into a retention pond which is supplemented by rainwater. The blended stream first passes through a microfiltration system that uses a specialized five-micron filter to remove organics and then dosed with chlorine.

“Once chlorination is complete, the water requires additional purification which is provided by UV Pure’s Upstream systems,” Longberry says. “UV disinfection inactivates pathogens like Cryptosporidium, Giardia and Legionella that can be resistant to chlorine. Proper UV disinfection also provides a second layer of protection to enhance the system’s performance and reliability since the changes for a potential disease outbreak are always very real for Cooper Farms.”

The final disinfection in each system is performed by one to four Upstream NC 15-50 systems that are each sized to handle flows from 15 to 60 gpm (57 to 227 L/min) of water, with UVT as low as 50%.

Crossfire Technology targets pathogens from every angle

UV Pure’s Crossfire Technology incorporates elliptical reflectors that reuse light energy to deliver a high UV dose and target pathogens from 360 degrees.

Dual smart UV sensors in the Upstream systems continually monitor UV lamp output and water quality to ensure the highest level of treatment is consistently delivered to protect Cooper Farms on an ongoing basis. If either of these parameters does not meet the set specifications, the systems will sound an alarm, notify the operator and automatically shut down.

“Overall, our partnership with UV Pure has been excellent,” Longberry says. “As a UV Pure distributor for the last 20 years, Flag City has received great technical support and fantastic systems in a timely fashion.”

Learn more about UV Pure’s Crossfire Technology.

Contact us to discuss your UV disinfection needs.

For UV Pure sales and service in Ohio, contact Flag City Water Systems.

Contact information:
1705 Romick Parkway
Findlay, Ohio 45840

Innovative water disinfection solutions in Singapore

Rainwater Reuse Growing in Singapore as Innovative Options Come to Market

Rainwater harvesting in Singapore is expanding—enabling residential and commercial property owners to capture, collect and reuse rainwater for non-potable, onsite applications.

Later this year, a large-scale rainwater harvesting and reuse system will start up at the INTERPOL Global Complex for Innovation and will enable potable water savings of over 11,000 m3 per year.

Designed and supplied by Singapore-based Netatech Pte Ltd., the rainwater system will incorporate a UV Pure Upstream unit to provide disinfection of harvested water before it is reused for toilet flushing.

Netatech UV Pure Singapore

The Upstream system with Crossfire technology is built to meet the same standards as NSF/ANSI 55 Class A requirements and will ensure that the water is free from pathogens such as bacteria and viruses to comply with national regulations.

Netatech is the exclusive representative for UV Pure products in Singapore and provides complete, highly integrated solutions for decentralized non-potable water management such as rainwater harvesting, storm water treatment and detention and drip irrigation.

These solutions are available for a range of industries including commercial, hospitality, institutional, municipal and residential. Netatech also supports these solutions with cloud-based automation, control and monitoring, phone and e-mail support and onsite maintenance.

“Netatech water management solutions are built around intelligent designs and tightly integrated systems that enable simple operation with exceptional performance and control, said David Tan, Director of Netatech Group. “UV Pure disinfection systems with Crossfire technology fit perfectly with our design and performance requirements and we look forward to working with UV Pure as we continue developing leading solutions for non-potable urban water conservation and reuse in Singapore and beyond.”


For UV Pure sales and service in Singapore please contact:

Netatech Pte Ltd.
512 Chai Chee Lane #06-04
Bedok Industrial Estate
Singapore 469028
+65 6243 0218