What Hydranautics does

Hydranautics is a global membrane technology company and a wholly-owned subsidiary of Japan's Nitto Denko Corporation, in operation since its 1987 acquisition. The company manufactures Reverse Osmosis (RO), Nanofiltration (NF), Ultrafiltration (UF), and Microfiltration (MF) membrane elements for water, wastewater, and process treatment applications, with a particular specialization in seawater desalination, brackish water treatment, industrial wastewater ZLD/MLD, and high-purity water for semiconductor and pharmaceutical manufacturing. Its core product portfolio is organized around flagship families including ESNA (NF softening), NANO-SW (oil and gas sulfate removal), HYDRACoRe (color removal), the PRO Series (industrial wastewater), and the CPA, ESPA, and SWC RO series, supported by patented Low Differential LD™ fouling-resistant technology using a 34 mil feed spacer.

Hydranautics operates from corporate headquarters and a manufacturing facility in Oceanside, California, with a second manufacturing site at Nitto Denko's Shiga Plant in Japan (expanded via a $60M investment in 2008). Its go-to-market is enterprise-focused, combining direct sales through regional offices with a global authorized distributor network across North America, Latin America, Europe, Africa, Middle East, China, the Indian Subcontinent, Northeast Asia, and Southeast Asia and Oceania. The company sells primarily one-time membrane element sales to engineering firms, water utilities, and industrial facilities on a quote-based pricing model, supplemented by a recurring software revenue stream through IMSDesign Cloud, a cloud-based membrane projection and system design tool launched in 2020.

The company's customer base spans municipal water utilities (e.g., Orange County Water District, City of Boca Raton, Singapore PUB), industrial operators (Hyflux, Vivendi Water Systems, Bayswater Power Station), and major desalination EPCs (IDE), with installations producing over 264 MGD of potable water from seawater worldwide and serving an estimated 400 million people daily across seven continents. Notable flagship projects include the 40 MGD Boca Raton nanofiltration plant (the largest NF plant in the US), the 14 MGD Larnaca seawater desalination plant in Cyprus, the 40,000 m3/d Kranji reclamation plant in Singapore, and the 35 MGD Gold Coast desalination plant in Australia. The company exited the hollow-fiber UF category in 2020 via the HYDRAcap product line transition to NX Filtration, refocusing on spiral-wound RO/NF and specialty industrial membranes.

Name

Hydranautics

Legal name

Hydranautics - A Nitto Group Company

Website

https://membranes.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Hydranautics is a global membrane technology company and wholly-owned subsidiary of Japan's Nitto Denko Corporation, manufacturing RO, NF, UF, and MF membrane elements for municipal water utilities, industrial facilities, and desalination projects across seven continents.

Ownership category

akta.pro rank

Product category

Water Treatment Membranes

NAICS

Water, Sewage and Other Systems (2213), Water Supply and Irrigation Systems (22131), Sewage Treatment Facilities (221320), Water Supply and Irrigation Systems (221310)

SIC

Water Supply (4941), Oil & Gas Field Machinery & Equipment (3533)

akta.pro primary industry

Membrane Treatment (UF/NF/RO for Potable) (EUANABAC)

akta.pro secondary industries

Membranes, Consumables & Chemicals (Elements, Antiscalants, Cleaning) (EUANAFAJ), Brackish Water Reverse Osmosis (BWRO) Plants & Operations (EUANAFAB), Effluent Polishing & Filtration (MBR/UF/RO/GAC) (EUANADAL)

Keywords

• Reverse osmosis membranes
• Nanofiltration membranes
• Seawater desalination systems
• Industrial wastewater treatment
• Water purification membranes

Headquarters

HQ city

Oceanside

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Membrane Element Sales: Hydranautics generates revenue primarily through the sale of membrane elements including Reverse Osmosis, Nanofiltration, Ultrafiltration, and Microfiltration products. Products are sold in various sizes (4-inch and 8-inch diameters, 40-inch lengths) to industrial, municipal, and commercial customers for water treatment applications.
2. Software & Design Services: Revenue generated from IMSDesign Cloud software for membrane projection and system design, as well as technical services including installation and start-up support for major projects.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Hydranautics manufactures and sells high-performance membrane elements — reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF) — used in seawater desalination, brackish water treatment, industrial wastewater reclamation, and high-purity water production. The company complements its membrane portfolio with the IMSDesign Cloud software for system design and projection, serving municipal water utilities, industrial facilities, and oil & gas operators worldwide.

Product overview

Hydranautics is a global leader in membrane technology offering a comprehensive portfolio of integrated membrane solutions for water, wastewater, and process treatment applications. The product portfolio includes Reverse Osmosis (RO) membranes (seawater desalination SWC series, brackish water CPA and ESPA series), Nanofiltration (NF) membranes (ESNA for softening, NANO-SW for oil and gas, HYDRACoRe for color removal), Ultrafiltration/Microfiltration (HYDRAcap), and the PRO Series for industrial wastewater ZLD/MLD applications. The company also provides IMSDesign Cloud software for membrane selection and system design. All products are backed by global manufacturing facilities in Oceanside, California and Shiga Prefecture, Japan, with worldwide sales and distribution.

Differentiator

Problem solved

Functional benefit

Brands

• PRO Series: Specialty membrane products for industrial wastewater treatment, including ZLD/MLD solutions.
• ESNA
• NANO-SW
• HYDRACoRe

Products and services

• PRO Series Industrial Membrane Elements Industrial wastewater treatment membrane elements designed for Zero Liquid Discharge (ZLD) and Minimum Liquid Discharge (MLD) applications. Includes PRO-XR (high rejection RO), PRO-LF (low fouling RO), PRO-XS (extra ion selectivity NF), PRO-XP (ultra high-pressure RO up to 1,800 psi), and PRO-XT (high temperature RO) variants for industrial facilities with demanding concentrate and temperature requirements.
• ESNA Nanofiltration Membranes Ultra-low pressure nanofiltration membranes for water softening, pesticide and pathogen removal, and municipal potable water systems. Provides 50–99% salt rejection at ultra-low operating pressures (below 100 psi). Includes ESNA1-LF-LD, ESNA1-LF2-LD, ESNA4-LD, and ESNA5-LD variants, with the ESNA5-LD specifically designed for energy-efficient removal of organic contaminants including PFAS from drinking water.
• NANO-SW Nanofiltration Membrane Sulfate-selective nanofiltration membrane for the oil and gas industry, designed for offshore seawater injection in secondary oil production. Rejects 99.8% of sulfate while passing monovalent ions, reducing scaling and reservoir souring risks in seawater injection systems.
• HYDRACoRe Color Removal Membranes Sulfonated polyethersulfone-based spiral-wound crossflow nanofiltration elements for potable water and industrial applications requiring color reduction with minimal removal of dissolved salts. Features superior chlorine tolerance up to 100 ppm during short-term cleansing. Includes HYDRACoRe10-LD, HYDRACoRe50-LD, and HYDRACoRe70pHT series.
• Reverse Osmosis (RO) Membranes High-performance reverse osmosis membrane elements for desalination and water purification applications, including SWC series for seawater desalination, CPA series and ESPA series for brackish water treatment, and specialty RO products. Produced in 4-inch and 8-inch diameters with 40-inch lengths.
• Nanofiltration (NF) Membranes Nanofiltration membrane elements with a molecular weight cutoff of 200 to 1500 for removal of divalent ions, organics, color, bacteria, and viruses. Designed to integrate with RO or UF membrane products in multi-stage treatment trains.
• IMSDesign Cloud Software Cloud-based membrane projection software, described as the world's first online membrane projection tool, used by engineers and system designers to model, select, and specify appropriate Hydranautics membrane products for water treatment systems.
• HYDRAcap Ultrafiltration Membranes Capillary ultrafiltration membranes for industrial and municipal applications with 100% removal of colloidal material greater than 0.1 micron. Available in 0.8mm and 1.2mm capillary diameters for varying turbidity waters (product line transferred to NX Filtration in October 2020).

Quantifiable outcome

• ESNA5-LD operating pressures range from approximately 0.2 to 0.4 MPa
• +3 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered minor and core.

• NX FiltrationminorStrategic or Co-development Partner · 1 October 2020Hydranautics transitioned its HYDRAcap™ product line to NX Filtration in October 2020, transferring the ultrafiltration product technology to enable NX Filtration to serve customers with hollow fiber membrane technology.
• StatkraftminorStrategic or Co-development Partner · 1 June 2011Cooperation agreement to develop osmotic power technology using pressure retarded osmosis (PRO) membranes. Statkraft and Nitto Denko/Hydranautics partnered to advance PRO technology for renewable energy generation from the mixing of salt and fresh water.
• IDE (Israel)coreStrategic or Co-development Partner · 1 June 2004IDE selected Hydranautics SWC3 membranes for the 14 MGD Larnaca seawater desalination plant in Cyprus. IDE has partnered with Hydranautics on multiple projects including Eilat, Ashdod, and Dead Sea Works in Israel.
• Vivendi Water Systems (Singapore)coreChannel Partner/ Reseller/ DistributorVivendi Water Systems selected Hydranautics' LFC1 membrane elements for the 40,000 m3/d Kranji High Grade Water Reclamation Plant in Singapore, serving semiconductor manufacturers.
• HyfluxcoreChannel Partner/ Reseller/ DistributorSingapore-based OEM Hyflux selected over 2,000 LFC1 membrane elements for the Bedok NEWater Factory Phase II project, a major wastewater reclamation facility.

Scale indicators3 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Toray Industries (Membrane Division): Toray's Membrane Division manufactures RO, NF, UF, and MF membrane elements for water treatment and desalination, including the CSM (formerly Toray Membrane) product line. Direct competitor to Hydranautics across SWC-class seawater desalination and brackish water RO markets with comparable global footprint.
• DuPont Water Solutions (FilmTec): DuPont's FilmTec line is the incumbent global leader in RO/NF membrane elements for industrial, municipal, and desalination applications. Closest direct competitor to Hydranautics, with comparable product portfolio (seawater, brackish, nanofiltration) and similar global distribution model.
• LG Chem (NanoH2O / LG Water Solutions): LG Chem's LG Water Solutions (acquired NanoH2O) manufactures thin-film nanocomposite RO membranes for seawater desalination and industrial water treatment. Direct competitor to Hydranautics' SWC and CPA series, particularly aggressive in Asia-Pacific and Middle East desalination markets.
• Koch Separation Solutions (KMS): Koch Separation Solutions (formerly Koch Membrane Systems) manufactures RO, NF, UF, and MF membranes for industrial and municipal water/wastewater treatment. Direct competitor with broader portfolio including PURON hollow-fiber UF, complementing Hydranautics' spiral-wound focus.
• SUEZ Water Technologies & Solutions (Veolia): SUEZ (now part of Veolia) operates Water Technologies & Solutions, supplying RO/NF membranes and integrated water treatment systems globally. Larger, vertically integrated competitor with service contracts alongside membrane element sales, directly competing for the same municipal and industrial accounts as Hydranautics.
• Pentair (formerly X-Flow): Pentair's X-Flow division manufactures hollow-fiber UF membranes for municipal and industrial water treatment. Direct competitor in the UF/capillary membrane category that Hydranautics exited via the 2020 HYDRAcap transition to NX Filtration.
• Asahi Kasei (Microza): Asahi Kasei manufactures Microza ultrafiltration and Microza HFS hollow-fiber UF membranes for water treatment, plus industrial process applications. Direct competitor in UF/microfiltration category, particularly strong in Asian municipal and semiconductor/industrial markets.

Broad incumbents

• Veolia Water Technologies (SIDEM Desalination): Veolia (via SIDEM and HPD) operates as a global EPC contractor for large desalination and water reuse plants, often sourcing membranes from Hydranautics, Toray, or DuPont. Acts as both a customer/partner and indirect competitor when it sources proprietary membrane solutions.
• Pall Corporation (Danaher): Pall Corporation (a Danaher subsidiary) manufactures industrial filtration and membrane products for water, bioprocessing, and industrial applications. Larger, more diversified player with overlapping RO/UF/membrane products serving overlapping industrial customers.
• 3M (Separation and Purification Sciences): 3M operates a Separation and Purification Sciences division with membrane products for industrial water treatment, food & beverage, and life sciences. Diversified industrial conglomerate with membrane products, competing broadly with Hydranautics in industrial process water and high-purity applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC5XbQE8jK5_J47G2ZckZwlw
• LinkedInlinkedin.com/company/hydranautics

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hydranautics