ROTEC is creating new standards for water treatment by maximizing recovery and reuse while enhancing performance and cost-savings. Our innovative water touch goes against the flow of conventional reverse osmosis (RO) and desalination. Combining our revolutionary Flow Reversal technology, creative solutions and expert service, we help people, communities and countries thrive, mitigate water scarcity and increase sustainability – delivering clear water value, everywhere.
Countries
Projects
m3/year
treated water
40
Creative water
experts
27M
m3/year clean
drinking water
Partner with ROTEC to transcend traditional water treatment methods and unlock unparalleled value from your water sources. Provide safe, clean water that nurtures healthy communities and a healthy planet.
Our retrofit and turnkey desalination and reverse osmosis solutions, based on our groundbreaking Flow Reversal Reverse Osmosis (FR-RO) technology, enhance sustainability, efficiency, and reliability, outperforming traditional systems. With our risk-free solutions, you can achieve higher water reuse while reducing energy consumption and costs, leading to higher profitability, growth and peace of mind.
With a dedicated team of water experts driven by genuine care for water efficiency, a flexible, personal approach and a proven global track record, ROTEC boldly pushes the boundaries of RO and desalination to new levels, creating new value from water.
Our proprietary Flow Reversal Reverse Osmosis (FR-RO) technology is the gold standard for high-recovery desalination by reverse osmosis (RO). It inhibits mineral scaling and biofouling by periodically changing the flow patterns in the reverse osmosis train, so that tail and lead elements in a train are switched.
This trailblazing technology, pushes the boundaries for recovery, enabling huge water and cost savings while mitigating environmental impact. Outperforming conventional RO desalination, it delivers more high-quality permeate, uses less chemicals and specific energy consumption, produces less waste, and achieves any recovery target for optimized performance and cost-efficiency.
Our field-proven offering comprises design, manufacturing, construction, operations and maintenance (O&M) and support for varied desalination and RO projects. With ROTEC solutions, customers can dramatically improve the performance of an existing desalination plant or RO system, or build one from scratch, all risk-free.
We are proud of our track record in serving a wide range of customers and collaborating with leading engineering, procurement, construction and industrial companies in varied sectors worldwide.
Santa Monica is on a transformative quest for water self-sufficiency, with the Arcadia Water Treatment Plant at the core of this endeavor.
The largest-scale desalination facility in the U.S. to adopt ROTEC’s innovative Flow Reversal Reverse Osmosis (FR-RO) technology, has significantly increased its production without expanding its footprint.
FR-RO innovation optimizes performance, achieving higher recovery rates and enabling the plant to produce 10% more water. Such advancements enhance the plant’s efficiency and sustainability, setting a new standard in the water treatment industry.
ROTEC presented at the AWWA & AMTA Membrane Technology Conference, sharing technical insights and field data on how Flow Reversal Reverse Osmosis (FR-RO) continues to advance high-recovery RO performance. Across two sessions, ROTEC engineers highlighted closed-loop FR-RO system design and a HERO retrofit case study, demonstrating improved stability, reduced fouling, and higher recoveries under challenging conditions.
ROTEC is featured in a recent International Water Conference (IWC) publication examining the use of Flow Reversal Reverse Osmosis (FR-RO) to upgrade a High-Efficiency RO (HERO) system in a Zero Liquid Discharge (ZLD) combined cycle power plant.
The paper documents a 2025 turnkey retrofit in the Southwestern United States, where FR-RO replaced conventional RO units treating cooling tower blowdown, improving recovery stability, operational flexibility, and long-term ZLD performance under highly variable feedwater conditions.
The Flow Reversal Reverse Osmosis (FR-RO) skids for the Ta’ Barkat Water Reclamation Plant in Malta has reached final assembly. Delivered under an EPC partnership with AST, the system is designed to produce up to 10,000 m³/day (≈2.6 MGD) of potable reuse–quality water at up to 90% recovery, supporting Malta’s national water reuse and long-term water security objectives.
ROTEC is proud to share that Prof. Jack Gilron, whose research led to the development of Flow Reversal Reverse Osmosis (FR-RO), has been honored with the Lifetime Achievement Award at the Israel Desalination Society (IDS) Conference.
His work established the scientific basis for FR-RO, a technology now operating across municipal, industrial, and advanced treatment facilities worldwide. By addressing the challenge of scaling at high recovery, his research has helped utilities and industries achieve more stable operation, higher recovery, and improved long-term performance.
We congratulate Prof. Gilron on this well-deserved recognition and the continued impact of his contributions to the water sector.
ROTEC has been featured in the latest issue of WDR, featuring the FR-RO project at Santa Monica’s Arcadia Facility. This project is enabling Santa Monica to reach its' goal of Water Independence by increasing recovery. The article highlights that this upgrade is the first municipal FR-RO retrofit in the U.S.
See why this milestone is making waves across the water sector.
Bruce Alderman, CEO of ROTEC USA, joined The Water Entrepreneur podcast to discuss how reverse osmosis continues to evolve and why advanced approaches like Flow Reversal RO are helping move proven RO technology forward. In the episode, he highlights the growing need for higher efficiency, the value of improving system resilience, and the role innovation plays in supporting today’s treatment demands. Bruce also reflects on broader industry trends and the future of high-recovery RO as utilities and industries look for smarter, more reliable ways to manage water.
Listen to the full episode to hear the complete discussion.
ROTEC has been recognized by Global Water Intelligence as a key driver of high-recovery reverse osmosis in potable reuse. The June 2025 issue spotlights Flow Reversal RO (FR-RO) as one of the leading technologies redefining water reuse efficiencies worldwide. Read how FR-RO is competing head-to-head in San Diego and delivering up to 93% recovery for utilities across California.
ROTEC CEO Boaz Shitzer presented at IFAT India 2025, sharing insights on how Flow Reversal RO (FR-RO) technology is addressing India’s growing water challenges. The presentation highlighted successful municipal and industrial case studies demonstrating ultra-high recovery, operational stability, and reduced OPEX. ROTEC continues to collaborate with leading partners like MTWS to deliver innovative and sustainable water treatment solutions across India.
Santa Monica's Arcadia Water Treatment Plant has successfully completed the US’s first municipal retrofit, using FR-RO, achieving 90% recovery without expanding its footprint. This advanced upgrade boosts local water supply, reduces energy and chemical use, and enables the city to produce water at about 30% lower cost than imported water.
At the GAWP and AWPCA conferences, ROTEC’s Head of U.S. Sales, Max Finder, presented results from more than ten U.S. pilot programs demonstrating non-detect PFAS removal and stable operation at up to 95% recovery using Flow Reversal RO (FR-RO). His presentation highlighted how FR-RO enables utilities and industries to overcome the limitations of conventional RO systems, reducing waste and operating costs while achieving consistent compliance with emerging PFAS regulations. The technology’s patented flow reversal and block rotation mechanisms make it a reliable, scalable solution for future-proof PFAS treatment.
UltraFacility’s Tech Talk: High-Recovery RO spotlights ROTEC’s Flow Reversal RO (FR-RO) technology as a key innovation enabling semiconductor fabs to achieve ultra-high recovery and stable operation.
ROTEC is featured in the winter edition of The Analyst, with our Santa Monica Arcadia Plant project on the cover and a full article. The piece explores how our Flow-Reversal RO (FR-RO) technology addresses one of the toughest challenges in water treatment, silica fouling, by reversing flow to minimize scaling and maximize recovery.
Watch the webinar to learn how enhanced-recovery reverse osmosis is helping utilities overcome common limitations in water reuse. The session covers real-world results from Santa Monica and OCWD, including pilot data, recovery improvements, and cost comparisons between FR-RO and conventional systems.
A pilot study at the City of Santa Monica’s Arcadia Water Treatment Plant validated ROTEC’s Flow Reversal Reverse Osmosis (FR-RO) for brackish groundwater desalination. The system achieved 90% recovery with stable performance, strong salt rejection, and longer cleaning intervals.
With a three-stage setup and flow reversal in the second stage, the system minimized fouling and maintained energy-efficient operation at lower pressures. The results highlight FR-RO’s value for municipalities seeking high recovery and operational efficiency.
We recently presented three poster sessions at major industry conferences, highlighting the versatility and performance of ROTEC’s Flow Reversal Reverse Osmosis (FR-RO) technology. From municipal wastewater reuse in Singapore to PFAS treatment in North Carolina, and large-scale system retrofits, each project demonstrated how FR-RO can address real-world challenges in water treatment while improving recovery, reducing fouling, and lowering operational costs.
These presentations highlighted that FR-RO facilities saw an increased recovery of up to 96% and reduced brine volume by 60%, while also removing PFAS and 1,4-dioxane to below detection limits. We highlighted how retrofitting existing systems with FR-RO enables utilities to scale recovery without disrupting operations. These projects underscore the impact of FR-RO across applications, from regulatory compliance to sustainability and cost-efficiency.
A study at the Orange County Water District validated ROTEC’s Flow-Reversal RO (FR-RO) for municipal potable reuse, achieving 90% recovery with stable performance and reduced fouling. FR-RO outperformed conventional RO in reliability and cleaning frequency, offering a cost-effective retrofit option.
While brine concentration posed operational challenges, FR-RO proved highly effective in primary treatment, even with higher salinity feedwater. It provides a scalable solution for utilities aiming to increase water recovery and minimize waste.
ROTEC is proud to support Singapore’s water sustainability efforts with our Flow Reversal Reverse Osmosis (FR-RO) technology at the Tuas Water Reclamation Plant. Developed for PUB, Singapore’s National Water Agency, this advanced system will treat municipal wastewater for reuse, contributing to the country’s supply of high-quality reclaimed water, known as NEWater, for industrial and municipal applications.
ROTEC, in collaboration with AST, has secured the EPC tender to deliver a state-of-the-art Water Reclamation Plant at the Ta’ Barkat Wastewater Treatment Plant in Malta. Using ROTEC’s advanced FR-RO technology, the plant will produce up to 10,000 cubic meters per day of DPR-quality water. This project joins ROTEC’s other DPR initiatives in San Diego and Colorado, further advancing sustainable water reuse.
ROTEC proudly participated in the International Desalination and Reuse Association (IDRA) World Congress, an essential global forum for discussing advancements and challenges in desalination and water reuse.
The event provided an excellent platform to engage with industry leaders, exchange innovative ideas, and showcase our cutting-edge solutions.
