What Aquion does

Aquion, Inc. is a Roselle, Illinois-headquartered manufacturer and marketer of premium water treatment equipment, founded in 1953 and operating as a privately held platform owned by Milwaukee-based private equity firm Mason Wells. The company operates four core divisions—RainSoft (premium residential water treatment and indoor air quality), ProSystems (private-label residential and commercial systems for independent dealers and plumbing contractors), ClearWater Tech (ozone generation equipment for commercial laundries, pools, spas, and water purification, with 200,000+ installations across six continents), and Erie Water Treatment Controls (components and complete systems, including the world's first automatic regeneration control valve developed in 1947)—plus the Procam/OptiPure foodservice filtration business. Products span water conditioners, iron and carbon filters, drinking-water purifiers, ozone and UV disinfection systems, reverse osmosis systems, and acid neutralizers, certified to NSF, WQA, UL, and manufactured at an ISO 9001-2015 certified 160,000 sq. ft. facility. Aquion manufactures hardware for residential, commercial, and light-industrial end users and generates revenue through a channel-led GTM model anchored by 150+ independently owned RainSoft dealerships with exclusive territories in more than 20 countries, supplemented by ProSystems private-label, Erie wholesale, and ClearWater Tech professional distributor channels, plus a recent November 2025 partnership with NetBox Labs to distribute infrastructure management software across Asia-Pacific. Pricing is not publicly disclosed and is set at the dealer level based on individual installation requirements, making the business primarily a hardware sales and private-label manufacturing model with recurring service revenue tied to the installed base.

Name

Aquion

Legal name

Aquion, Inc.

Website

https://aquion.com

Company type

Private

Founded year

1953

Operating status

Operating

Headcount range

101–250 employees

Short description

Aquion is a private manufacturer of premium water treatment equipment operating four divisions—RainSoft, ProSystems, ClearWater Tech, and Erie Water Treatment Controls—serving residential, commercial, light-industrial, and foodservice customers globally through a network of 150+ independent dealers and distributors.

Ownership category

akta.pro rank

Product category

Water Treatment Equipment

NAICS

Pump and Compressor Manufacturing (33391), Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914), Fluid Power Valve and Hose Fitting Manufacturing (332912)

SIC

Pumps & Pumping Equipment (3561), Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)

akta.pro primary industry

Water Filtration, Treatment & Softening Plumbing Products (IMADALAK)

akta.pro secondary industries

Under-Sink Water Filtration Systems (CRAJAJAD), Water Testing & Chemical Balancing (HSAIALAB)

Keywords

• Water treatment equipment
• Water filtration systems
• Residential water softeners
• Commercial water purification
• Ozone generation systems

Headquarters

HQ city

Roselle

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Water Treatment Equipment Sales: Sale of premium water treatment equipment including water conditioners, filters, purifiers, disinfection systems, and reverse osmosis systems to residential and commercial customers through dealer and distributor networks.
2. Private-Label Manufacturing: ProSystems division manufactures residential and commercial water treatment systems under private-label for independent dealers, plumbing contractors, and home improvement contractors.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels2 records

Core offering

Aquion manufactures and markets premium water treatment equipment including water conditioners, iron filters, carbon filters, drinking-water purifiers, ozone and ultraviolet disinfection systems, reverse osmosis systems, and acid neutralizers. The company operates through four distinct divisions—RainSoft, ProSystems, ClearWater Tech, and Erie Water Treatment Controls—plus the Procam Controls/OptiPure line, serving residential, commercial, and light industrial water treatment customers globally.

Product overview

Aquion is a manufacturer and marketer of premium water treatment equipment operating as a platform of four distinct operating divisions. The portfolio includes: RainSoft (premium residential water treatment with over 150 dealer locations), ProSystems (private-label residential and commercial systems for plumbing contractors), ClearWater Tech (ozone generation equipment for commercial and industrial purification), Procam Controls/OptiPure (commercial filtration and reverse osmosis for foodservice), and Erie Water Treatment Controls (components and complete systems including regeneration control valves). Together they serve residential, commercial, and industrial water treatment markets globally.

Differentiator

Problem solved

Functional benefit

Brands

• RainSoft: Premium residential water treatment solutions including water conditioners, filters and indoor air quality products
• ProSystems
• ClearWater Tech
• Procam Controls
• OptiPure
• Erie Water Treatment Controls
• EarthSafe Technology

Products and services

• RainSoft Premium residential water treatment solutions brand offering water conditioners, filters, and indoor air quality products sold through more than 150 independently owned dealerships with exclusive territories in the US and 20 other countries.
• ProSystems Private-label manufacturing division producing residential and commercial water treatment systems for independent water treatment dealers, plumbing contractors, and home improvement contractors in the US, Canada, and worldwide markets.
• ClearWater Tech (CWT) Ozone generation equipment for commercial laundries, swimming pools, spas, water features, and water purification needs using EarthSafe Technology, sold through professional distributor and dealer network in the US and internationally.
• Procam Controls (OptiPure) Water and chemical management equipment for printing, medical imaging, photographic, foodservice and water treatment industries, including the OptiPure line of commercial filtration products and membrane separation (reverse osmosis) systems for foodservice applications such as ice makers, fountain beverages, coffee and tea brewers, espresso, and combi ovens.
• Erie Water Treatment Controls Manufacturer of components and complete water treatment systems including automatic regeneration control valves for independent water treatment dealers, plumbing wholesalers, and service plumbing contractors, with operations in the US (Elk Grove Village) and Europe (Olen and Grobbendonk, Belgium).

Quantifiable outcome

• 200,000+ ozone installations completed across six continents
• +1 more outcomes

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• NetBox LabscoreChannel Partner/ Reseller/ Distributor · 9 November 2025Strategic partnership with NetBox Labs to expand APAC reach, with Aquion distributing NetBox Labs' infrastructure management platform. The collaboration serves organizations across government, finance, and energy sectors by providing automation and security solutions. Partnership strengthens regional access to NetBox's enterprise capabilities and builds a reseller network.

Scale indicators7 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Pentair: Global water treatment and flow control company. Pentair completed the acquisition of Aquion in 2019 per company history, and continues to offer overlapping residential and commercial water treatment products (softeners, filtration, RO), making it a direct comparator in product category and customer base.
• Culligan Water: Global water treatment company offering residential, commercial, and industrial water softening, filtration, and drinking water systems through a similar franchised/dealer distribution model that closely mirrors RainSoft's go-to-market.
• EcoWater Systems: Marmon Group-owned manufacturer of residential and commercial water treatment equipment sold through a network of independent dealers in the US and internationally; directly comparable in product line and dealer-led distribution.
• Watts Water Technologies: Manufacturer of water treatment, plumbing, and flow control products for residential, commercial, and industrial markets. Overlaps with Aquion across water filtration, softening, and reverse osmosis product categories.
• A. O. Smith Corporation: Global water technology and heating company with a substantial water treatment business including residential filtration, softening, and RO systems, serving overlapping residential and commercial end markets.
• Kinetico: Manufacturer of non-electric, demand-driven water treatment systems for residential and commercial applications, sold through an authorized dealer network with exclusive territories that parallels Aquion's RainSoft model.
• Hellenbrand: US-based manufacturer of residential and commercial water treatment equipment including water softeners, filters, and RO systems sold through dealer and contractor channels, directly comparable to Aquion's core product portfolio.

Broad incumbents

• Xylem: Global water technology company offering treatment, transport, and testing solutions across utility, commercial, and residential water markets. Overlaps with Aquion in water treatment equipment though at a much larger scale across broader markets.
• 3M Purification: Large diversified manufacturer with a water filtration business serving residential, commercial, foodservice, and industrial customers. Comparable in product line (filtration, RO) and end markets, particularly OptiPure's foodservice segment.
• Veolia Water Technologies: Global water services and technology company serving industrial, commercial, and municipal customers with treatment systems, chemicals, and service. Overlaps with Aquion's commercial and light industrial water treatment offerings at a much larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 records

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 Aquion