What APTwater does

APTwater, LLC (formerly Applied Process Technology, Inc.) is a privately held water treatment and environmental remediation technology company headquartered in Pittsburg, California. Founded in the mid-1990s, the company develops and deploys proprietary advanced oxidation and biological reduction processes—principally HiPOx™, PulseOx™, and ARoNite®—to destroy emerging contaminants of concern including 1,4-Dioxane, TCE, MTBE, PFAS co-treatment, nitrate, perchlorate, hexavalent chromium, and selenium in drinking water, groundwater, soil, and industrial wastewater. HiPOx uses ozone and hydrogen peroxide to generate hydroxyl radicals with patented bromate control; PulseOx delivers in-situ chemical oxidation for soil and groundwater remediation in portable trailer/containerized units; ARoNite uses autotrophic bacteria on hollow fiber membranes to reduce contaminants without generating a brine waste stream.

APTwater serves municipal water utilities, industrial manufacturers, and government agencies including the U.S. Navy, U.S. Air Force, EPA Superfund sites, and DoD installations, with a footprint of over 500 commercial installations worldwide. The company earns revenue through engineered equipment sales, design-build and turnkey deployments, laboratory and pilot-scale testing, aftermarket preventative maintenance (T&M), and lease and lease-to-purchase financing. Following its January 2023 acquisition by Upwell Water, APTwater launched a Water Treatment as a Service (WaaS) model under which the firm designs, builds, owns, and operates treatment systems at customer sites for a fixed monthly per-gallon fee, converting customer capex to opex and bundling chemicals, operations, maintenance, monitoring, and capital replacement. Distribution is direct to enterprise and government buyers, augmented by a U.S. manufacturing representative network and project referrals from engineering and environmental consulting firms.

Name

APTwater

Legal name

APT Water LLC

Website

https://aptwater.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

APTwater designs, deploys, and operates proprietary advanced oxidation (HiPOx, PulseOx) and biological reduction (ARoNite) treatment systems to destroy 1,4-Dioxane, TCE, PFAS, nitrate, and other emerging contaminants for municipalities, industrial customers, and U.S. government agencies, including via a Water Treatment as a Service model.

Ownership category

akta.pro rank

Product category

Industrial Water Treatment Services

NAICS

Remediation Services (562910), Water Supply and Irrigation Systems (221310), Sewage Treatment Facilities (221320)

SIC

Hazardous Waste Management (4955), Water Supply (4941)

akta.pro primary industry

Disinfection & Oxidation (Chlorine/Chloramine, UV, Ozone, AOP) (EUANABAD)

akta.pro secondary industries

Chlorinated Solvent & VOC Groundwater Remediation (e.g., PCE/TCE) (BPALAKAC), Nutrient & Contaminant Removal (Nitrate, Fluoride, Arsenic, PFAS, Metals) (EUANABAH), Industrial Wastewater Treatment Chemicals (IMAEAJAC), Groundwater Extraction, Treatment & Discharge (Pump-and-Treat, reinjection) (BPALAKAF)

Keywords

• Advanced oxidation processes
• Water treatment systems
• Environmental remediation services
• Drinking water treatment
• Wastewater treatment solutions

Headquarters

HQ city

Sacramento

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Water Treatment as a Service (WaaS): APT designs, builds, and operates treatment systems at customer sites under multi-year service agreements. Customers pay a predetermined fixed price per month over an agreed contract term, with the first payment due on system delivery. At contract end, customers may purchase the equipment, extend the duration, or return it. All chemicals, gases, operations, maintenance, repairs, remote monitoring, and capital replacements are included in the fixed monthly fee. Converts a capital expenditure into an affordable ongoing operating cost.
2. Project Financing – Lease and Lease-to-Purchase: APT offers flexible lease and lease-to-purchase financing across all solutions to reduce upfront system investment. Customers can choose how much to pay upfront versus finance over the lease term.
3. Aftermarket Sales & Services (Preventative Maintenance): Scheduled preventative maintenance services performed on installed HiPOx, PulseOx, and ARoNite systems at client sites to improve operation efficiencies and extend service life. Billed on a Time and Materials (T&M) basis.
4. Laboratory and Pilot Scale Testing Services: Bench testing to determine effectiveness and efficiency of HiPOx technology for customer-specific treatment objectives. Determines appropriate dose rates of O3 and H2O2 for scale-up to field units. Pilot unit testing designed to mimic full-scale plant conditions to generate performance guarantees.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels6 records

Core offering

APT Water designs, manufactures, and operates advanced water treatment and environmental remediation systems using proprietary Advanced Oxidation Processes (HiPOx, PulseOx) and biological reduction technology (ARoNite) to destroy emerging contaminants such as 1,4-Dioxane, TCE, PFAS, MTBE, and nitrate. The company delivers its solutions primarily through a Water Treatment as a Service (WaaS) model, eliminating upfront capital investment for municipalities, industrial customers, and government agencies.

Product overview

APTwater is an emerging contaminant treatment and remediation solutions company offering a portfolio of three proprietary core technologies: HiPOx™ (advanced oxidation process using ozone/hydrogen peroxide), PulseOx™ (in-situ chemical oxidation for soil/groundwater remediation), and ARoNite® (biological reduction for nitrate/contaminant destruction). These are offered alongside a Water Treatment as a Service model that eliminates upfront investment, plus supporting services including laboratory testing, pilot scale testing, total solution design/build, aftermarket sales, and operations/maintenance. The company specializes in destroying contaminants including 1,4-Dioxane, PFAS, TCE, MTBE, nitrate, and other emerging contaminants with over 500 installations worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• HiPOx Patented high-performance advanced oxidation process (AOP) system utilizing ozone alone or ozone with hydrogen peroxide to generate hydroxyl radicals for destroying difficult-to-degrade trace organics, EDCs, and disinfecting without creating residual waste. Used for municipal drinking water, industrial water/wastewater, and environmental remediation applications.
• PulseOx Aggressive in-situ chemical oxidation (ISCO) technology utilizing ozone, hydrogen peroxide, oxygen, and air injection for soil and groundwater remediation of contaminants such as MTBE, BTEX, TBA, 1,4-Dioxane, and TCE. Available as a portable trailer-mounted or containerized system.
• ARoNite Award-winning biological contaminant destruction technology that uses naturally occurring autotrophic bacteria and hollow fiber membrane biofilm reactors to reduce nitrate, perchlorate, selenium, and hexavalent chromium without producing waste brine or by-products. Certified by CDPH and NSF-61.
• Water Treatment as a Service (WaaS) Turnkey service model where APT designs, builds, and operates treatment systems at customer sites under multi-year service agreements. Customers pay a fixed monthly price per gallon of clean water treated, with all chemicals, operations, maintenance, monitoring, and capital replacements included, converting capital expenditure to operating cost.
• Laboratory Testing Bench testing services to determine effectiveness and efficiency of HiPOx technology for customer-specific treatment objectives, including determining appropriate dose rates of ozone and hydrogen peroxide for scale-up to field units.
• Pilot Scale Testing Pilot unit design and testing services that mimic full-scale plant operations using similar components and process conditions to generate performance guarantees and mitigate risk before full-scale deployment.
• Total Solution Design & Build Complete design, manufacturing, and construction services for water treatment systems, incorporating multiple treatment technologies customized for specific applications including drinking water, remediation, water reuse, process water, and wastewater.
• Aftermarket Sales & Services Scheduled preventative maintenance services performed on installed HiPOx, PulseOx, and ARoNite systems at client sites including inspection, maintenance, and optimization of oxygen/ozone systems, cooling systems, hydrogen peroxide systems, and electrical components. Billed on a Time and Materials basis.
• Operations & Maintenance & Emergency Response Operations, maintenance, and emergency response services for APT treatment systems with trained technicians and regional service partners, typically including a one-year maintenance contract that can be extended.

Quantifiable outcome

• Over 500 successful water and wastewater installations worldwide
• +7 more outcomes

Named customers14 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

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• G&C Engineering (Seoul, Korea)coreImplementation/ SI/ Consulting PartnerAPT Water provides its HiPOx system through G&C Engineering of Seoul, Korea, as part of a turnkey treatment system for Toray-Saehan's industrial wastewater treatment project in South Korea. G&C Engineering serves as the local engineering and implementation partner for international deployments.
• Air Products and Chemicals, Inc. (APCI)coreStrategic or Co-development PartnerAPCI coordinated with APT Water on bench and pilot tests for the City of Wichita's 30 MGD ASR project. APCI was responsible for construction of the full-scale HiPOx system at Wichita, validating the technology through rigorous testing and driving the commercial implementation. Long-standing technical and commercial collaboration spanning multiple years and projects.
• CDM (now CDM Smith)coreImplementation/ SI/ Consulting PartnerCDM (now CDM Smith), a major engineering and construction firm, oversaw the Wichita ASR project bench and pilot tests in coordination with APCI and APT Water. CDM recommended HiPOx technology for the project and secured regulatory approval from KDHE. CDM has partnered with APT on multiple projects including the San Bernardino ARoNite project.
• Environmental Process Equipment Company (EPEC)minorChannel Partner/ Reseller/ DistributorEPEC, as APCI's local representative, introduced HiPOx technology to the City of Wichita and CDM for their ASR project consideration, facilitating the initial engagement that led to the Wichita project.
• Broadbent & Associates, Inc.coreImplementation/ SI/ Consulting PartnerBroadbent & Associates selected APT Water's PulseOx technology for the remediation of gasoline release at Falconi Tropicana Honda in Las Vegas, NV. Broadbent was responsible for site assessment, remedial design, and selection of PulseOx for the project, demonstrating trust in APT's technology for challenging remediation sites.

Scale indicators8 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• Trojan Technologies: Trojan Technologies (now part of Veralto) is a leading UV-based advanced oxidation process (UV/H2O2) provider for municipal and industrial water treatment, the direct incumbent against APTwater's HiPOx ozone-based AOP for drinking water contaminant destruction. APTwater's bromate control and cost-per-treat claims target Trojan's installed base.
• De Nora: De Nora provides electrochemical and ozone-based advanced oxidation systems for drinking water, wastewater, and industrial reuse — directly comparable to APTwater's HiPOx AOP. Targets the same emerging contaminant (1,4-Dioxane, PFAS) customer base with alternative oxidation chemistry.
• AdEdge Water Technologies: AdEdge supplies small-to-mid-scale water treatment systems for emerging contaminants (arsenic, nitrate, PFAS, iron/manganese) to municipal and industrial customers. Comparable to APTwater in serving smaller water utilities with packaged contaminant-specific treatment, often via channel partners.
• REGENESIS Bioremediation Products: REGENESIS provides in-situ chemical and enhanced bioremediation products and services for contaminated soil and groundwater, directly overlapping with APTwater's PulseOx ISCO and ARoNite biological reduction offerings across EPA Superfund, DoD, and private remediation sites.

Broad incumbents

• Xylem: Xylem is a global water technology major offering a broad portfolio of treatment, AOP (via Wedeco ozone/UV), and filtration products to municipalities and industrial customers. Overlaps with APTwater's drinking water and industrial wastewater segments but competes as a multi-product suite rather than a niche AOP specialist.
• Veolia Water Technologies: Veolia (incorporating the former Evoqua) is one of the largest water treatment incumbents with extensive municipal and industrial treatment offerings, including AOP and biological removal systems. Addresses the same drinking water, wastewater, and reuse markets as APTwater from a portfolio/financing position.
• SUEZ Water Technologies & Solutions: SUEZ (now part of Veolia) supplies a wide range of municipal and industrial water treatment solutions including oxidation and membrane systems for contaminant removal. Competes with APTwater in larger municipal and industrial RFPs via integrated offerings and global services.
• Calgon Carbon: Calgon Carbon (a Kuraray subsidiary) is the leading activated carbon supplier for PFAS, PFOA, and other trace organics removal in drinking water and remediation. APTwater's add-on carbon bed approach competes with Calgon's standalone carbon adsorption solutions for the same contaminants.
• H2O Innovation: H2O Innovation designs and operates custom water and wastewater treatment systems, including oxidation and biological processes, and provides operations/maintenance services — closely analogous to APTwater's total-solution design, build, and operate model for municipal and industrial customers.

Emerging players

• Halogen Systems: Halogen Systems specializes in ozone generation and AOP systems for water and wastewater treatment, including 1,4-Dioxane destruction. Overlaps directly with APTwater's HiPOx ozone chemistry for industrial and municipal applications at smaller scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/aptwater-llc

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 APTwater