If you are planning to install a 500 LPH RO Plant in Chennai, one of the first questions is usually: How much does a 500 LPH RO plant cost, including installation?
A 500 LPH RO plant can be suitable for commercial buildings, schools, hotels, restaurants, apartments, offices, hospitals, institutions and other applications that require a continuous supply of purified water. However, the final project cost is not determined by the RO machine alone. Water quality, pre-treatment, plumbing, electrical work, storage tanks and site conditions can all affect the total investment.
For 2026, the listed price of the 500 LPH RO Plant from Jei Aqua Tech is ₹1,60,000, reduced from a listed price of ₹1,70,000. The company also states that standard installation is free, with same-day installation available in Chennai.
What Is a 500 LPH RO Plant?
A 500 LPH RO Plant is a commercial reverse osmosis water purification system designed to produce approximately 500 litres of purified water per hour, subject to the feed-water quality and operating conditions.
Unlike a domestic RO purifier, a commercial RO plant is designed for higher water demand and longer operating periods. It generally combines pre-filtration with reverse osmosis technology to reduce dissolved salts, suspended impurities and other contaminants from the incoming water.
Jei Aqua Tech's 500 LPH model uses reverse osmosis technology and is designed for brackish-water purification. Its listed configuration includes filtration vessels, carbon media, cartridge filters, membrane housings, pumps, flow meters, pressure gauges, control components and CPVC/UPVC piping.
500 LPH RO Plant Price in Chennai 2026
The price of a 500 LPH RO plant can vary considerably depending on the equipment specification and installation requirements.
For example, Jei Aqua Tech currently lists its 500 LPH RO Plant Automatic at ₹1,60,000. Standard installation is stated to be free.
As a general market reference, other published 2026 pricing information places 500 LPH commercial RO systems across a broad range depending on configuration, pre-treatment and installation scope. One Chennai-focused market guide gives an indicative capex range of approximately ₹1.80 lakh to ₹3.50 lakh for a 500 LPH commercial RO installation, while another 2026 guide separates equipment and installation costs. These figures should be treated as market indicators rather than fixed quotations.
Indicative Cost Structure
Component
Indicative Cost
500 LPH RO Plant – Jei Aqua Tech
₹1,60,000
Standard installation
Free*
Additional plumbing/pipeline
Depends on site
Electrical modifications
Depends on site
Additional pre-treatment
Depends on raw-water quality
Storage tank
Depends on capacity/material
Civil work/platform
If required
Transportation/site-specific work
Depends on location

Standard installation terms apply; additional site work may be chargeable depending on requirements.
Therefore, it is better to ask for a site-specific quotation instead of comparing only the machine price.
500 LPH RO Plant Installation Cost Breakdown
The installation cost of a commercial RO plant depends on how ready the installation location is.
1. RO Plant Equipment
The primary investment is the RO plant itself.
Jei Aqua Tech's listed 500 LPH automatic model is priced at ₹1,60,000. The listed system includes components such as membrane housings, filtration vessels, carbon media, cartridge filter housings, pressure gauges, flow meters, control components and SS skid construction.
The exact equipment configuration should always be checked before purchasing because two plants with the same 500 LPH capacity can have different component quality and automation levels.
2. Pre-Treatment System
Pre-treatment is an important part of a commercial RO plant installation.
Depending on the raw-water quality, the system may require:
Sand or multimedia filtration
Activated carbon filtration
Micron filtration
Water softening
Iron removal filtration
Antiscalant dosing
If the incoming water contains high hardness, iron, suspended particles or other contaminants, additional treatment may be required before the water reaches the RO membranes.
This is one reason why a proper water quality test is useful before finalising the RO plant configuration.
3. Plumbing and Pipeline Work
The RO plant needs connections between the raw-water source, pre-treatment system, RO plant, purified-water storage tank and reject-water outlet.
The total plumbing cost depends on:
Distance between equipment
Pipe diameter
Pipe material
Number of tanks
Installation location
Number of valves
Reject-water drainage arrangement
A short and straightforward installation can require much less additional work than a commercial site with long pipe runs.
4. Electrical Work
A commercial RO plant requires suitable electrical power and control-panel connections.
Additional electrical work may be required if the installation location does not already have an appropriate power point, wiring, protection devices or earthing arrangement.
The electrical requirements should be checked before installation so that the plant can operate safely and reliably.
5. Storage Tank
A 500 LPH RO plant produces up to approximately 500 litres per hour under suitable operating conditions. A storage tank can therefore be useful when the purified water needs to be supplied continuously.
The tank size depends on the application and daily water requirement.
For example, an apartment, school and manufacturing unit may all