Built for the daily reality of treatment plants.
From site diligence and engineering to commissioning, operations, and AI-ML optimisation - GSI manages the full 15-year lifecycle of water and wastewater infrastructure for industries, municipalities, and institutions across India.
One Partner. The Complete Water Cycle.
GSI works where engineering decisions meet long-term operational consequences. From water treatment and wastewater management to Zero Liquid Discharge and AI-ML plant intelligence, the company supports critical infrastructure with the discipline expected by plant managers, compliance officers, and government bodies. We study, engineer, commission, operate, and optimise — so you do not have to manage multiple vendors at every stage.
What We Do
From an initial site assessment through to design, construction, daily operations, maintenance, and compliance reporting, GSI's services cover every stage of a treatment project. One company, the full picture.
Design, Build, Operate (DBOC)
Full project ownership from concept through commissioning, with one accountable team.
Engineering to Standard
8-domain internal engineering benchmarks govern every unit process — screening to ZLD.
Site Diligence & Feasibility
300+ parameter structured site assessment before a single design decision is made.
Perpetual O&M
On-site teams, SOP-driven operations, and a 15-year engagement vision for every plant.
AI-ML Plant Intelligence
Real-time monitoring, anomaly detection, predictive maintenance and digital twin optimisation.
Compliance & Regulatory Support
PCB compliance, regulatory submissions, and legal representation at NGT, Supreme Court, and High Courts.
Built to Sustain Critical Water Infrastructure - Not Simply Commission It.
Study First, Always
Every project begins with a 15-section, 300+ parameter site diligence framework — covering influent variability, biological kinetics, energy, compliance, and more — before any design decision is made.
Engineering by Benchmark
GSI designs by internal standard, not approximation. Eight engineering domains — from screening to ZLD evaporation — each governed by documented benchmark parameters and evidence requirements.
Operational Accountability
Qualified on-site teams run every plant on 3-shift coverage. SOPs are developed at commissioning and updated continuously with AI-ML insights and operational data.
15-Year Lifecycle Thinking
Total lifecycle cost — CAPEX + 15-year OPEX — is modelled from Day 1. Every tank size, technology choice, and automation decision is made with perpetual operability in mind.
Treatment Systems
GSI offers treatment systems across water supply, sewage, and industrial wastewater management - from pre-engineered packaged installations for rapid deployment to full-scale custom-engineered plants. Every system is configured to the specific site conditions, incoming quality, and regulatory standard it must meet.
Packaged WTP
Raw or surface water treated to potable or process quality using SUF, RO, NF, and softening technologies.
Packaged STP
On-site sewage treated to reusable standard through MBR, MBBR, or SBR biological processes.
Packaged ETP
Industrial wastewater treated across biological membrane (MBR), high-recovery (HRRO), and ZLD stages.
Modular WTP
Expandable water treatment in scalable units. Start at required capacity; add modules as demand grows.
Full-Scale STP
Large-volume sewage treatment engineered to site specification for municipalities and major developments.
Industrial ETP
Wastewater treatment configured to the specific composition of your industrial process output.
ZLD Systems
All wastewater concentrated and recovered through HRRO, MEE, ATFD, and MVR stages. Nothing leaves the site.
CETPs
One shared treatment facility for an entire industrial cluster, handling combined wastewater from every contributing unit.
When People Get Clean Water, Everything Changes
When a facility treats and reuses its wastewater, the impact extends far beyond the plant boundary. Manufacturers maintain production continuity. Residential townships reduce dependence on municipal supply. Industrial estates meet discharge obligations. Hospitals protect public health. The water question touches every sector — and GSI works across all of them.
70+ Active Projects Across India
70+ active projects across India, spanning packaged treatment systems, full-scale water and wastewater plants, and long-running operations contracts.
Let's talk about your site.
Whether you are scoping a new plant, reviewing a system that is not performing as it should, or looking for consistent O&M support, we can give you a clear, qualified assessment of where to start.