Chennai's rainwater harvesting experts · 10+ years

Catch the rain. Recharge the earth.

We provide the best rainwater harvesting consulting and installation — systems that store rain for ready use, or charge it back into the soil to raise your groundwater level.

Get a free consultation See how it works

+91 93848 56660

நிலத்தடி நீர்மட்டத்தை உயர்த்துவது எப்படி?

ARS team installing a recharge pit beside a city street — Street-side recharge pit installation

Looking down the shaft of a concrete-ring recharge well — Concrete-ring recharge well

Precast concrete chamber cover with drainage holes — Perforated chamber cover, ready to fit

Ring well lined with blue metal stones and a mesh-wrapped inlet — Ring well with a blue-metal filter bed

Charcoal filter layer inside a recharge well — Charcoal filter layer in a recharge well

10+years of experience

Freeconsultation from our experts

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Rooftop harvesting Recharge pits Recharge wells Borewell recharge Filter units Storage tanks Percolation pits Commercial & industrial

About ARS

More about us

We have been providing special rainwater harvesting services for over 10 years. Broadly, rain can be harvested in two ways — stored for ready use, or charged into the soil for withdrawal later.

Cut-away illustration of an underground rainwater storage tank beside a building

Store it

Rainwater stored for ready use in containers above or below the ground — for washing, flushing, gardening and more.

Rainwater flowing from a pipe into a concrete-ring recharge well surrounded by gravel

Recharge it

Rain charged into the soil for withdrawal later — groundwater recharging that helps raise the water level in your wells and borewells.

10⁺

Years of experience in rainwater harvesting

Components in a complete harvesting system

Ways to harvest — store it or recharge it

Free

Consultation from our experts

How it works

Follow a raindrop from roof to aquifer.

A rainwater harvesting system has components for every stage — carrying rain through pipes or drains, filtering it, and storing it in tanks for reuse or recharge. Scroll to follow the water.

01
Catchments

The surface that directly receives the rainfall and feeds the system. It can be a paved area like a terrace or courtyard, or an unpaved area like a lawn or open ground. Roofs of reinforced cement concrete (RCC), galvanised iron or corrugated sheets can also be used.
02
Coarse mesh

Fitted at the roof to prevent the passage of debris, so leaves and dirt are stopped before they reach the pipes.
03
Gutters

Channels around the edge of a sloping roof that collect rainwater and carry it towards storage. Gutters can be semi-circular or rectangular, made from:
- Plain galvanised iron sheet (20 to 22 gauge), folded to shape
- PVC pipes cut into two semi-circular channels
- Bamboo or betel trunks cut vertically in half
04
Conduits

Pipelines or drains that carry rainwater from the catchment or rooftop to the harvesting system — usually commonly available PVC or galvanised iron (GI).
05
Filter

Removes suspended pollutants from rooftop rainwater. A chamber of fibre, coarse sand and gravel layers traps debris and dirt before the water enters the tank or recharge structure — with charcoal added for extra filtration.
06
Storage facility

Tanks or sumps that hold the filtered water for reuse, built in a wide range of shapes, sizes and materials to suit your site.
07
Recharge structures

Rainwater is charged into groundwater aquifers through dugwells, borewells, recharge trenches and recharge pits. Existing wells, pits and tanks can often be modified as recharge structures — no need to build afresh.

What are you looking for?

Why harvest rain?

Rain is our primary source of water. Harvesting it secures water for your home or building — and gives back to the ground beneath it.

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An ideal solution where water is scarce

In areas where the groundwater supply is inadequate, or surface resources are lacking or insufficient, rainwater harvesting offers an ideal solution.

Makes use of the primary source of water

It keeps runoff from going into sewers and storm drains, reducing the load on treatment plants.

Reduces urban flooding

Holding rain where it falls, instead of letting it rush into streets and drains, helps reduce flooding in the city.

Improves groundwater quality

Recharging water into the aquifers helps improve the quality of existing groundwater through dilution.

See the system

Every system, explained.

These diagrams show how rainwater moves from the roof into storage — and back into the ground.

Bilingual Tamil and English diagram: rain from a house roof runs through the rain water canal and drain pipe, a sand filter and into a water tank

Cut-away illustration of an underground rainwater storage tank beside a building, feeding garden sprinklers

Illustration of the water cycle: precipitation, interception, infiltration, runoff, evaporation and transpiration

Rooftop to tank. Rain from the roof runs along the canal and down the drain pipe, through a sand filter and into the water tank. A tap drains the initial rain water, and the overflow is led away — labelled in Tamil and English.

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