What GREENEX does

GREENEX is a Chennai-headquartered environmental engineering company that designs, builds, and operates water and wastewater treatment systems for industrial, commercial, residential, and institutional clients across South India. Its core technical portfolio spans Water Treatment Plants, Effluent Treatment Plants (ETP), Sewage Treatment Plants (STP), Reverse Osmosis (RO) plants, and integrated Zero Liquid Discharge (ZLD) systems combining ETP, Ultra Filtration, RO, evaporators (MEE, MVRE, Kettle), and Agitated Thin Film Dryer (ATFD); the portfolio also extends into air pollution control via wet and dry scrubbers and online regulatory monitoring (CEMS, CEQMS, CAAQMS).

The business operates across four interlocking pillars: (1) turnkey project execution from concept design through commissioning; (2) environmental consultancy securing TNPCB, CPCB, hazardous waste, biomedical waste, and EPR approvals; (3) day-to-day Operations & Maintenance contracts including refurbishment of legacy plants; and (4) a wholly-owned NABL ISO/IEC 17025:2017 accredited analytical laboratory (Greenex Enviro Laboratory Pvt Ltd) for water, wastewater, air, soil, food, and minerals testing. The company also distributes Nature Works (Spain) anti-compaction glass filter media as a specialty consumables line.

GREENEX serves a diversified enterprise client base including Larsen & Toubro, Tata Communications, Hyundai, Toyota, Ford, Yamaha, Ashok Leyland, Apollo Hospitals, Fortis Healthcare, JIPMER, Taj Hotels, TVS Emerald, RMZ Corp, Shapoorji Pallonji, and NCC Limited. It is privately held and founder-led by Managing Director Mr. KP Periaswami (B.TECH Chemical Engineering), with branches in Nellore, Coimbatore, and Madurai beyond the Chennai headquarters. The go-to-market is direct enterprise field sales with quote-based, project-specific pricing and recurring O&M and consultancy retainers.

Name

GREENEX

Legal name

GREENEX

Website

https://greenexindia.co.in

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

101–250 employees

Short description

GREENEX is a Chennai-based environmental engineering firm designing, building, and operating turnkey water and wastewater treatment systems (ETP, STP, RO, ZLD) for industrial, commercial, residential, and institutional clients across South India, with complementary NABL-accredited lab testing, regulatory consultancy, and O&M services.

Ownership category

akta.pro rank

Product category

Water and Wastewater Treatment Services

NAICS

Sewage Treatment Facilities (221320), Water Supply and Irrigation Systems (221310), Environmental Consulting Services (541620)

SIC

Sanitary Services (4950), Services-Testing Laboratories (8734), Water Supply (4941)

akta.pro primary industry

Industrial Wastewater & Effluent Treatment Services (BPALAHAD)

akta.pro secondary industries

Water Treatment Plant Construction (Drinking Water) (IMAFAGAA), Monitoring & Control (Dosing Systems, Remote Monitoring, Sensors) (BPABAJAK), Water & Wastewater Compliance (NPDES/Stormwater, Pretreatment, Drinking Water/SDWA) (EUAHABAB), Industrial Wastewater Treatment Chemicals (IMAEAJAC)

Keywords

• Water treatment services
• Wastewater treatment solutions
• Environmental engineering services
• Effluent treatment plants
• Zero liquid discharge systems

Headquarters

HQ city

Chennai

HQ country

India

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Turnkey Project Execution: Design, supply, erection, commissioning and operation of water and wastewater treatment plants on turnkey basis. Includes Water Treatment Plants, RO Plants, ETP, STP, and ZLD systems.
2. Laboratory Testing Services: NABL accredited environmental analytical chemistry testing services for water, wastewater, air quality, soil, food, minerals and ores testing. Revenue generated through testing fees.
3. Operations & Maintenance Contracts: Ongoing O&M services for centralized treatment plants and large custom-built projects. Includes refurbishing and modernization of existing plants.
4. Environmental Consultancy Services: Obtaining environmental clearances, consents and approvals from TNPCB and CPCB. Includes CTE, CTO, HWA, BMWA authorizations, hazardous waste management, and EPR filing.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

GREENEX designs, supplies, erects, commissions, and operates turnkey water and wastewater treatment plants including Water Treatment Plants, Effluent Treatment Plants (ETP), Sewage Treatment Plants (STP), Reverse Osmosis (RO) systems, and Zero Liquid Discharge (ZLD) systems for industrial, commercial, residential, and institutional clients. The company complements these core offerings with NABL-accredited environmental laboratory testing, regulatory consultancy services for TNPCB/CPCB approvals, and ongoing Operations & Maintenance (O&M) contracts.

Product overview

GREENEX is a water and wastewater management company offering an integrated portfolio of treatment solutions and environmental services. The core product portfolio includes Water Treatment Plants, Waste Water Treatment Plants, Sewage Treatment Plants (STP), Effluent Treatment Plants (ETP), RO Plants, and Zero Liquid Discharge (ZLD) Systems for industrial water recycling. These are complemented by air pollution control equipment including Wet and Dry Scrubbers. Supporting services include Greenex Enviro Laboratory (NABL-accredited testing), Consultancy Services (environmental compliance, CPCB/TNPCB approvals), and Operation & Maintenance (O&M) Services for day-to-day plant management. The company also distributes Nature Works Hi-Tech Glass Filter Media as an add-on product. Additional monitoring solutions include CEMS, CEQMS, and CAAQMS for regulatory compliance. The portfolio follows a modular approach where treatment plants form the core infrastructure, supported by specialized laboratory, consultancy, and monitoring services.

Differentiator

Problem solved

Functional benefit

Products and services

• Water Treatment Plant

Quantifiable outcome

• 15+ years of industry leadership in water and wastewater management
• +1 more outcomes

Named customers18 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Nature Works (Spain)coreStrategic or Co-development PartnerGREENEX is an authorized stockist for Nature Works Hi-Tech Glass Filter Media with anti-compaction technology. Nature Works has been at the service of efficiency and technology applied to water filtering for 10 years, providing filter media for home, public and industrial filtration sites around the world. The product provides maximum performance, reusability, energy/water/chemical savings, certified purity and total safety during installation.

Scale indicators3 records

Recent moves1 record

Expansion highlights5 records

Direct peers

• VA Tech Wabag: India-headquartered pure-play water and wastewater treatment EPC and O&M company. Directly competes with GREENEX in industrial ETP, STP, ZLD and municipal water projects, with a far larger pan-India and international footprint.
• Ion Exchange (India): Indian water and environmental management company offering water treatment plants, process chemicals, resins, and O&M. Overlaps directly with GREENEX on turnkey ETP/STP/RO and water treatment chemicals across industrial and institutional customers.
• Doshion Polysol: Indian water and wastewater treatment company providing turnkey ETP/STP/RO/ZLD, O&M, and specialty chemicals. Directly comparable mid-sized competitor serving industrial clients across India.
• Enviro Tech Services: Indian environmental services firm offering ETP, STP, RO, ZLD, and environmental consultancy. Directly comparable to GREENEX in size, scope, and customer profile within the Indian mid-market environmental engineering space.

Broad incumbents

• Thermax Limited: Large diversified Indian EPC with a water and waste solutions division alongside energy and chemicals. Competes with GREENEX in industrial ZLD and ETP but as part of a much broader portfolio across power, heating, and chemicals.
• SUEZ Water Technologies & Solutions (India): Global water and wastewater treatment major with an active India presence serving industrial and municipal clients with EPC, specialty chemicals, and digital water solutions. Competes with GREENEX on large industrial ZLD/ETP and on chemical dosing/monitoring.
• Ecolab India: Global leader in water, hygiene, and infection prevention solutions with a substantial India business. Overlaps with GREENEX on industrial water treatment chemicals, dosing systems, and monitoring services for large enterprise accounts.
• Hitachi Water (formerly Sulzer Water & Industry): Global EPC and service provider for water, wastewater, and industrial process treatment. Competes with GREENEX on large industrial ZLD/ETP projects but at significantly larger scale and with broader geographic reach.
• Aquatech International: Global water and wastewater treatment specialist with strong presence in India and industrial focus including ZLD, desalination, and reuse. Comparable to GREENEX on industrial water infrastructure but at much larger scale and global footprint.

Regional players

• Lenntech: European water treatment solutions provider focused on RO, UF, and industrial water systems. Comparable to GREENEX on RO/UF/membrane technologies but primarily serves EMEA and does not directly compete in the Indian mid-market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights6 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 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 GREENEX