Toray Industries has been a pioneer in the membrane market since the early 1970s. TMUS offers expertise in water and wastewater treatment technologies including: reverse osmosis, ultrafiltration, microfiltration and membrane bioreactors. Integrated membrane solutions such as MF/RO, UF/RO and/or MBR/RO help our customers improve their competitiveness and plant performance. Toray's state-of-the art automated manufacturing ensures consistent product quality and superior RO element performance. Ultra-Filtration/Micro-Filtration modules offer top quality filtration with effective waterborne pathogen removal. Our modules carry both NSF-61 and State of California Department of Public Health (CDPH) certification for use in drinking water installations. Flat sheet MBR modules from Toray offers high quality treated water, with minimized fouling and pore clogging.


The HFU-B2315AN ultrafiltration (UF) module is a 'plug and play' technology for easy replacement of common MF skid sizes. Featuring Toray's proven durable TIPS PVDF membrane with 0.01 µm pore size, each HFU-B2315AN module contains 60 square meters of active membrane area per module, unlike 50 square meters currently available in the market. The additional membrane area delivers 20% more filtrate flow at a compact footprint and an ideal retrofit solution. The modules are certified under NSF/ANSI Standards 61 and 419 for drinking water safety.

As part of Toray’s MEMBRAY MBR series, the NHP (New High Performance) module features thin membrane flat sheets that are densely packed into easily interchangeable cassettes. These cassettes allow for a higher packing density than what was originally thought possible with flat plate designs. The thin membranes are also highly flexible and allow for more movement, resulting in increased vibrations during aeration. This helps dislodge sludge and improve cleaning efficiency, all with less energy use. 

CSM NF membranes selectively removes divalent and monovalent ions, making it ideal for a wide range of applications. Typical uses include production of food & beverage, dye recovery, and water softening and removal of specific impurities (i.e. color, DBP, THM) for potable use. CSM NF Membranes are constructed with either a polyamide or piperazine thin-film layer, and are available in various sizes. Inquire within for custom-engineered solutions.

Following 4”, 8” and 16” membranes can be used in multiple membrane systems to treat sea water or high salinity water > 10’000 ppm. The 4” membrane types can be used for small private or shipboard sea water desalination.

Toray Membrane USA (TMUS) offers a suite of membrane elements using RO, NF, UF, and MF membranes in sanitary full-fit design for dairy and specialty applications. Our manufacturing facility in San Diego, California, manufactures RO, NF, UF, and MF membrane elements under ISO 9001:2015 QMS to ensure consistent quality and ISO 14001:2015 EMS to enhance environmental performance. TMUS also has sales offices in Wisconsin and Minnesota. Count on Toray for quick lead times and sales support. Visit to learn more!

Toray Industries, Inc. manufactures TORAYFIL™ Ultrafiltration (UF) membrane modules using a proprietary thermally induced phase separation spinning method (TIPS) to produce a highly durable PVDF hollow fiber with 0.01 μm membrane pore size. TORAYFIL™ UF modules effectively remove suspended solids and pathogens and are certified for drinking water applications.

With over 40 years of experience in RO membrane innovation, TORAY has developed a new product range of the widely successful low pressure BWRO elements, offering higher durability and better performance than ever before. The new element series outperforms a leading competitor in key test benchmarks, making it the product of choice for low energy brackish water RO processing.


Toray Membrane USA

13435 Danielson Street

Poway, CA 92064


Phone: (858) 218-2360

Contact: Sales


  • The makeup of produced water generated from oil, natural gas, or coal-seam-gas (CSG) production and other sources creates many challenges for water reuse or discharge to the environment. Reverse osmosis (RO) membranes are essential to treatment, but not all industrial applications warrant identical approaches. Here are several important considerations for getting maximum value from produced-water RO treatments at minimal total lifecycle costs.

  • A Phosphorus mine in Wyoming needed to treat high selenium concentrations leaching into the surface water. A 3-month pilot study of a UF/RO system was conducted to reduce selenium levels under the US EPA's maximum contaminant level (MCL) of 0.05 mg/L, and mitigate impact to the ecosystem, especially aquatic species. Read the full case study to learn how Toray's high-rejection energy-efficient RO (TMGD series) removed the selenium at reduced feed pressures, projected to save the plant energy costs for years.

  • Zydus Infrastructure operates the Pharmez Special Economic Zone (SEZ) near Ahmedabad, where a 'common effluent treatment plant' (CETP) collects industrial wastewater from 12 pharmaceutical sites, treating it via clarification, followed by a 750 KLD membrane bioreactor (MBR) process.

  • The Brazos Regional Public Utility Agency (BRPUA) in Texas operates the Surface Water and Treatment System (SWATS) that treats water from Lake Granbury, fed by the Brazos River. The SWATS facility first began operating in 1988 with clarification, dual media filtration, and electrodialysis reversal (EDR). The plant was upgraded in 2001 to include ultrafiltration (UF) and reverse osmosis (RO) membrane treatment to produce higher quality effluent.

  • By using Toray's low-fouling polyamide composite membranes, the WTPs at the AMATA estates operated the RO systems for more than five years before requiring replacement of the RO elements. This low rate of replacement has considerably helped the end-user save operational and capital costs and is noted as one of the most successful wastewater reuse plants in Thailand.

  • The Valley Center Municipal Water District (VCMWD) operates two wastewater treatment facilities in Valley Center, which is located in the northern part of San Diego County, California. Both WRF's incorporated an in-house membrane thickener (MBT) design and selected Toray's MEMBRAY™ Membrane Bioreactor (MBR) modules for the process. VCMWD's objectives were to conserve water and meet the Regional Water Quality Control Board's effluent standards (Title 22), so the reclaimed water can be used for irrigation and other reuse applications. The MEMBRAY™ MBR modules helped the local utility achieve these goals.

  • As a leading global supplier of semiconductors and other related IT components, access to a consistent supply of clean water is essential in Taiwan for sustaining a growing economy. However, in 2015, the country experienced one of the worst droughts in its history. Combined with frequently occurring typhoons that hamper the availability of clean water, this sparked the government to implement countermeasures immediately. Read the full case study to learn more.

  • The City of Delaware, Ohio's Water Treatment Plant (WTP) started operating in 1889. Under the EPA's Long Term 2 Enhanced Surface Water Treatment Rule (LT2), the WTP's feed water is classified as Bin 2, which requires a 4-log removal of Cryptosporidium. As a result, the City would convert its 6.0 MGD lime softening plant to a 7.2 MGD membrane treatment facility utilizing a 4.5 MGD ultrafiltration (UF) system to comply. A total of seven proposals were received during the bidding phase of the UF system, which was narrowed down to three based on best projected capital and operating costs and membrane performance. The three selections would be piloted for further evaluation. Read the full case study to learn more.

  • As the agriculture economy boomed, needs for freshwater demanded by irrigation, tourism and the local community also grew in Campo de Dalías, a coastal region on the Mediterranean Sea. As a result, the region faced overexploitation of groundwater aquifers. Read the full case study to learn how Toray was selected as the sole membrane supplier for a two-pass system for a newly implemented national desalination plan.

  • For water system operators, contract engineers, OEMs, and reverse-osmosis (RO) membrane suppliers alike, the difference between expectations for RO membrane element performance and quantifiable performance in the actual operating environment can be fraught with surprises. This article addresses guidelines for establishing realistic RO warranty performance criteria and achieving those criteria in real-world applications.

  • Advanced technology and more widespread acceptance are driving a growing number of municipalities to adopt the practice of wastewater reuse. Ultrafiltration (UF) has been proven a key in this process, but operators have struggled to keep up with repairs or having to replace older hollow-fiber membranes. Recent advancements in manufacturing have produced more durable membranes that accomplish the task at a lower cost based on the total lifecycle.

  • Toray UF membrane modules were piloted over a fifteen-week period to help service the growing demand for clean water in southwest North Dakota. The outcome, as part of the Southwest Pipeline Project (SWPP), would be construction of the Oliver-Mercer-North Dunn (OMND) Water Treatment Plant.

  • To better comply with the Long Term 2 Enhanced Surface Water Treatment Rule (LT2) the City of Delaware (Ohio) piloted Torayfil hollow-fiber PVDF membrane modules to treat surface water for their 7.2 mgd full-scale facility. After significant review of the data, cost, and other factors, the City and URS selected Toray to utilize in the full scale design. Read the full case study to learn more.

  • CH2M contacted Toray Membrane USA with an invitation to pilot our pressurized TIPS hollow fiber UF membrane module for the City of Sherman Texas 10 MGD Expansion Project. This document summarizes the findings of this pilot study program.

  • Ultrafiltration (UF) membranes have already gained worldwide acceptance in the treatment of drinking water for their removal of chlorine resistant pathogens such as cryptosporidium. Tertiary treatment with UF has been established, although with a lower level of knowledge and number of installations. This paper will discuss the performance of hollow fiber UF/MF membrane modules in treating tertiary effluent, and the subsequent performance of the downstream RO membranes.

  • This presentation will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility, North Dakota.

  • This article will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at a drinking water treatment facility in North Dakota, and explain how performance of these UF membranes over a fourteen month period demonstrated stable operation with minimal fouling.