What Axius Water does

Axius Water is a multi-brand platform specializing in advanced nutrient removal and wastewater treatment technologies for municipal and industrial customers. Founded in 2019 by KKR's Global Impact Fund and XPV Water Partners, the company built its portfolio through a series of acquisitions of established water treatment businesses — EOSi, Nexom, EDI, ATAC Solutions, Napier-Reid, Triplepoint, MITA Water Technologies, Aero-Mod, and S&N Airoflo — each retained as an operating brand serving a specific niche (carbon dosing, lagoon treatment, aeration, filtration, custom-engineered systems). Its technology portfolio spans patented biological nutrient removal (Sequox, SAGR, BioPorts MBBR), aeration systems (FlexAir Pro, Ares Aerator, NitrOx), carbon sources (MicroC), filtration (Pile Cloth Filters, Blue PRO), and automation (Nitrack). The platform collectively reports 8,000+ EDI installations in 100+ countries, 3,000+ Napier-Reid projects in 40+ countries, and 800+ Nexom deployments, serving customers such as NYC DEP, Tyson Foods, Conagra, AECOM, Thames Water, Anglian Water, Cameco, and Kinross.

Axius Water generates revenue through five primary streams: sale of water treatment equipment and systems (one-time), proprietary chemical products such as MicroC (recurring/subscription), aftermarket parts and services (hardware), custom engineering solutions (professional services), and equipment rental in the UK through ATAC Solutions. Distribution is direct sales-led through each subsidiary's regional teams, supported by event presence at WEFTEC and IFAT, an international partner network, and EDI's Diffuser Express e-commerce channel for aftermarket parts. Pricing is quote-based and customized for municipal and industrial buyers.

In May 2026, KKR and XPV Water Partners agreed to sell Axius Water to CRH for approximately $700 million, with the transaction closing in June 2026 and the platform becoming part of Oldcastle Infrastructure, CRH's infrastructure subsidiary.

Name

Axius Water

Legal name

Axius Water

Website

https://axiuswater.com

Company type

Private

Founded year

2019

Operating status

Acquired

Headcount range

11–50 employees

Short description

Axius Water is a multi-brand platform specializing in advanced nutrient removal and wastewater treatment technologies for municipal and industrial customers, operating through acquired subsidiaries covering aeration, biological treatment, filtration, carbon dosing, and automation. Acquired by CRH/Oldcastle Infrastructure in June 2026.

Ownership category

akta.pro rank

Product category

Wastewater Treatment Equipment and Nutrient Removal Systems

NAICS

Sewage Treatment Facilities (221320)

SIC

Water Supply (4941)

akta.pro primary industry

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ)

akta.pro secondary industries

Effluent Polishing & Filtration (MBR/UF/RO/GAC) (EUANADAL), Adsorption & Taste/Odor Control (GAC/PAC, Air Stripping) (EUANABAF)

Keywords

• Wastewater treatment systems
• Nutrient removal technology
• Biological treatment solutions
• Water aeration equipment
• Municipal water infrastructure

Headquarters

HQ city

Pocasset

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Water Treatment Equipment & Systems: Sale of specialized wastewater treatment equipment including aeration systems, filtration units, biological reactors, and lagoon solutions through multiple brand companies
2. Chemical Products (MicroC®): Sale of proprietary non-hazardous carbon sources and treatment chemicals for biological nutrient removal processes
3. Aftermarket Parts & Services: Replacement parts, maintenance services, and technical support for installed equipment across global customer base
4. Custom Engineering Solutions: Custom-engineered water and wastewater systems design and implementation services
5. Equipment Rental (UK): Rental of wastewater treatment equipment through ATAC Solutions in the UK market

Go-to-market motion3 records

Distribution channels5 records

Marketing channels5 records

Core offering

Axius Water is a multi-brand platform providing advanced nutrient removal solutions for municipal and industrial wastewater, potable water, and process water treatment. The company manufactures and sells proprietary water treatment equipment (aeration systems, biological reactors, filtration units, lagoon solutions), chemical products (MicroC carbon sources), and custom-engineered treatment systems through nine specialized brand companies. Customers include municipal governments, water utilities, and industrial facilities across 100+ countries.

Product overview

Axius Water is a multi-brand platform and global leader in advanced nutrient removal solutions for municipal and industrial wastewater, as well as potable and process water treatment. The platform operates as a portfolio of specialized water quality companies, each focusing on different aspects of nutrient management and wastewater treatment. The portfolio includes Aero-Mod (mechanical/biological treatment with Sequox technology), ATAC Solutions (UK wastewater equipment), EDI (aeration systems), EOSi (MicroC carbon sources and Nitrack automation), MITA Water Technologies (pile cloth filtration), Napier-Reid (custom-engineered systems), Nexom (biological/filtration/lagoon solutions), S&N Airoflo (surface aeration), and Triplepoint (lagoon systems). The companies work together under the unified mission of stopping nutrient pollution, offering complementary technologies that address the full spectrum of wastewater treatment needs from aeration and carbon dosing to filtration and nutrient removal.

Differentiator

Problem solved

Functional benefit

Brands

• Aero-Mod: Operator approved, end-to-end scalable mechanical plants improving wastewater in North American communities since 1981.
• ATAC Solutions
• EDI (Environmental Dynamics International)
• EOSi (Environmental Operating Solutions)
• MITA Water Technologies
• Napier-Reid
• Nexom
• S&N Airoflo
• Triplepoint

Products and services

• Aero-Mod Wastewater treatment systems provider specializing in mechanical and biological nitrogen removal technologies, including the patented Sequox process. Operator-approved, end-to-end scalable mechanical plants improving wastewater in North American communities since 1981.
• ATAC Solutions Leading UK wastewater design and process equipment contractor specializing in capital, hire, and turnkey applications. Provides liquid waste disposal, equipment hire, pump sales, and manufactures Lamella settlement tanks and SAF modular treatment plants.
• EDI (Environmental Dynamics International) Global wastewater solutions provider with advanced aeration design, equipment, and aftermarket services since 1975. Specializes in diffused aeration systems including FlexAir Pro curve-panel, tube, and disc diffusers with up to 60% energy savings.
• EOSi (Environmental Operating Solutions) Experts in biological nutrient removal solutions, premium non-hazardous carbon sources (MicroC), and advanced process control including Nitrack automation technology.
• MITA Water Technologies Global supplier of energy-efficient systems for wastewater biological treatment and tertiary pile cloth filtration since 1971. Products include pile cloth filters, Biorulli for biological treatment, Biocombi compact plants, Lamella pack systems, continuous sand filters, and DAF systems.
• Napier-Reid Custom-engineered water and wastewater systems provider with 3,000+ projects in 40+ countries since 1950. Products include SBRs, RBCs, DAFs, clarifiers, membrane filters, and water treatment packages.
• Nexom Proven filtration, biological, and lagoon-based wastewater solutions for nutrients (NH3-N, NOx, and P), BOD and TSS. Technologies include BioPorts MBBR, SAGR post-lagoon nitrification, Blue PRO reactive filtration, and Cyclor Turbo (in partnership with SUEZ).
• S&N Airoflo Leading supplier of surface aeration and mixing systems specializing in oxidation ditches and lagoons since 1989. Floating brush aerators added to Axius Water portfolio in August 2025.
• Triplepoint Preserving small-town lagoon systems by engineering solutions that allow them to meet modern effluent standards. Products include Ares Aerator (BABA-compliant, combines fine and coarse-bubble aeration), NitrOx for cold weather ammonia removal, and lagoon-based total nitrogen removal systems.
• MicroC Carbon Source Products Non-hazardous carbon source products from EOSi for biological nutrient removal in wastewater treatment. Glycerin-based sustainable alternative to methanol, providing safe carbon dosing for denitrification and enhanced biological phosphorus removal.
• Nitrack Process Automation Real-time data intelligence and automated optimization technology from EOSi for carbon dosing in wastewater treatment facilities. Helps operators optimize carbon dosing with greater precision and reliability.

Quantifiable outcome

• ~90 million kg of nutrients removed from water by clients in 2024
• +4 more outcomes

Named customers20 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature12 records

Partnerships

Four partnerships are on record, tiered core and minor.

• SUEZcoreStrategic or Co-development Partner · 8 September 2025Nexom, an Axius Water company, partnered with Suez to bring enhanced Aerobic Granular Sludge (AGS) technology called Cyclor Turbo to the North American market. Licensed technology partnership for advanced wastewater treatment.
• Iowa American WatercoreStrategic or Co-development PartnerPartnered with Axius Water company Nexom on the Blue Grass, Iowa lagoon modernization project, serving as the water utility customer for the SAGR technology implementation that became a statewide model.
• MITA GroupcoreOthersFormer parent company of MITA Water Technologies before acquisition by Axius Water. MITA Group retains other business lines in Italy.
• J.R. Cousins EngineeringminorImplementation/ SI/ Consulting PartnerEngineering firm that partnered with Nexom on the Wabaseemoong Independent Nations project, implementing BioPorts MBBR retrofit for remote first nation wastewater treatment facility.

Scale indicators12 records

Recent moves9 records

Expansion highlights7 records

Direct peers

• Fluence Corporation: Provider of decentralized water and wastewater treatment solutions including MABR and SBR technologies for municipal and industrial customers, competing in similar mid-market and emerging-market segments as Axius.
• De Nora: Italian water treatment equipment manufacturer specializing in electrochemistry, filtration, and disinfection with municipal and industrial focus directly comparable to Axius's MITA Water Technologies and EDI offerings.
• Evoqua Water Technologies: Pure-play provider of water and wastewater treatment products and services to municipal and industrial customers; acquired by Veolia in 2023, competing head-to-head with Axius in aeration, filtration, and biological treatment.
• Smith & Loveless: U.S. manufacturer of packaged wastewater treatment systems, lift stations, and headworks equipment for municipal markets, competing most directly with Aero-Mod and Napier-Reid's mechanical/biological treatment offerings.
• H2O Innovation: North American provider of integrated water treatment systems, filtration membranes, and specialty chemicals serving municipal and industrial customers with comparable scope to Napier-Reid and MITA Water Technologies.

Broad incumbents

• Suez Water Technologies & Solutions: Provides municipal and industrial water treatment solutions including the Aerobic Granular Sludge technology licensed to Axius's Nexom (Cyclor Turbo), making it both a partner and direct competitor in advanced biological wastewater treatment.
• Kurita Water Industries: Japanese industrial water and wastewater treatment specialist serving manufacturing clients across chemicals, food, and paper - directly comparable to Axius's industrial segment serving Tyson, Conagra, International Paper, and mining customers.
• Xylem: Global water technology leader (~$7B revenue) with aeration, filtration, and disinfection solutions directly overlapping Axius Water's EDI, Nexom, and Triplepoint product lines, particularly in municipal wastewater.
• Veolia Water Technologies: Global water and wastewater treatment operator and equipment supplier; competes across municipal nutrient removal, filtration, and biological treatment where Axius operates.

Regional players

• Severn Trent: UK-listed water utility and treatment solutions provider with overlapping customer relationships (UK water utilities) and nutrient-removal expertise, primarily serving the European market where ATAC Solutions competes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/AxiusWater
• LinkedInlinkedin.com/company/axius-water

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries9 records

Funding overview

Funding rounds1 record

Investors1 record

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

M&A5 records

Investments

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

Frequently asked questions about Axius Water