Watts
Engineering A More Complete Approach To Water Quality

Water quality rarely comes down to one contaminant or one piece of equipment. Watts approaches the problem across treatment, filtration, disinfection, conditioning and scale prevention, giving residential and commercial customers a broad portfolio from which to address different water conditions. Its water quality offering includes point-of-use filtration and reverse osmosis, whole-house treatment, UV disinfection, water softeners, anti-scale systems and commercial filtration.

That breadth supports Watts’ positioning as a single-source water quality partner. The company says its portfolio is designed to simplify specification, procurement and service while serving a wide range of residential and commercial applications. Its engineering-backed approach also draws on more than six decades of water treatment innovation, connecting product selection with the practical requirements of installation and use.

The distinction becomes clearer when individual technologies are viewed as parts of a treatment strategy. Watts can combine filtration, reverse osmosis, scale reduction and UV treatment in engineered systems, allowing the treatment sequence to reflect the water challenge instead of forcing every application into the same solution.

“Everything we design is made to keep the Earth’s most precious resource safer, cleaner and more useful for our customers,” says Robert J. Pagano Jr., CEO and president.

Making Scale Prevention More Practical

OneFlow illustrates that philosophy through a different approach to hard-water scale. Its technology uses dissolved calcium, magnesium and bicarbonate ions to form microscopic crystals that remain suspended in water rather than attaching to internal plumbing surfaces. The process provides scale control without salt, chemicals, electricity or backwashing, reducing the infrastructure and ongoing inputs associated with conventional softening.

The system can also be matched to specific applications. Commercial OneFlow models are installed before water-using equipment such as coffee makers, espresso machines, steamers and water heaters. OneFlow+ combines scale prevention with a high-capacity filter designed to reduce chlorine taste, odors and sediment, bringing two treatment functions into one compact unit.

Real installations show what that approach looks like in practice. At Pueblo City Schools, point-of-use OneFlow systems were installed in commercial kitchens to address excessive hardness. The district reported that scale buildup was no longer an issue. At Anthony’s Coal Fired Pizza, the results from the first installations prompted the company to replace softeners across more than 40 locations.

Pairing Filtration with Disinfection

Scale and taste are only part of the water-quality equation. Watts’ SmartStream UV systems use 254-nanometer ultraviolet light to inactivate microorganisms without chemical disinfectants. The residential and light-commercial range includes models handling flows of up to 12 gallons per minute, with visual and audible alarms that indicate when the lamp needs replacement or has failed.

The treatment process can also be arranged around the conditions a system encounters. Watts recommends using filtration and scale reduction alongside UV because sediment can affect UV performance and scale can build up on system components. In these setups, pretreatment helps protect the equipment before water reaches the UV stage. Watts also offers skid-packaged systems that combine filtration, reverse osmosis, scale reduction and UV.

The portfolio goes beyond treatment alone. Watts offers filtration systems for sediment, chemicals and dissolved solids, as well as instruments that monitor chlorine, monochloramine, UV performance and turbidity. For municipal and commercial users, this brings monitoring into the treatment process, making it possible to track water conditions instead of addressing problems only after they appear downstream.

Designing for Real-World Conditions

A municipal installation at Lone Chimney Water Association in Oklahoma shows how those capabilities have to work under practical constraints. The 2-million-gallon-per-day plant needed dependable monitoring after switching from free chlorine to chloramines. Its MCX Monochloramine Analyzer provided readings every 15 to 20 minutes and was designed to run for up to 30 days without attention.

The location made ease of maintenance particularly important. Lone Chimney is a remote site where frequent service visits are difficult, so its plant personnel needed equipment that they could maintain themselves. The customer reported that the analyzer helped the facility maintain compliance with disinfection-byproduct requirements while also addressing reliability problems it had experienced with a competitor’s equipment.

A commercial application shows how different treatment technologies can work together around a specific end use. Truck Wash Technologies in Ontario uses a 100-gallon-per-minute OneFlow system to control scale in its truck-washing equipment, followed by a Watts commercial reverse osmosis system for final rinsing. The RO process removes the remaining minerals that could leave spots on vehicles as they dry, giving each treatment stage a clear role in the finished result.

Connecting Technology to Long-Term Value

Watts’ water quality strategy increasingly connects treatment equipment with conservation and connected technologies. The company reports that OneFlow systems helped customers avoid more than 138 million gallons of water, 12 million pounds of salt and three million kilowatt-hours of electricity in 2022 by avoiding regeneration and discharge associated with conventional softening.

Its broader strategy is also moving toward connected water management. Watts’ 2025 sustainability report describes the expansion of its Nexa intelligent water management platform and a Smart & Connected product suite focused on safety and regulation, water conservation and energy efficiency. The company says these connected products are intended to help customers manage water more safely and sustainably while generating measurable cost savings.

The combination of technologies, application knowledge and system-level thinking gives Watts a distinctive place in water quality. From a household filter to a municipal analyzer or a configured commercial treatment system, its portfolio addresses different points in the water journey. That breadth, backed by documented applications and engineering capabilities, provides the foundation for Watts’ recognition as Top Water Quality Solutions 2026.