RAINWATER HARVESTING

Turn Rain Into a
Reliable Water Source.

Capture. Store. Reuse. Recharge.

Engineered rainwater harvesting systems for homes, hotels, apartments and institutions. More than a tank — a complete water management solution.

1
CAPTURE From your roof
2
FILTER RidgeX technology
3
RECYCLE & REUSE Clean water
Rainwater Harvesting System Overview

Lower dependence

on tankers & municipal supply

₹

Save water costs

over time

Sustainable

and resilient buildings

Trusted by 300+

projects across India

ROOFTOP POTENTIAL ESTIMATOR

What Can Your Roof Really Do?

Most owners severely underestimate their catchment potential. Enter your roof size and location to preview your annual water yield, utility cost savings, and tailored system architecture in seconds.

1,000 m² Roof Catchment
1,200 mm Annual Precipitation
ANNUAL YIELD
1.20M Litres Usable Clean Water

How Our 9-Step System Works

Three Stages. Complete Water Solutions. From Roof to Reuse.

Ridge Water 9-Step Rainwater Harvesting System Architecture
Not just a tank. A complete system.

3 Stages to Clean, Usable Water

1

Pre-Filtration

Keep your tanks clean

Filters rainwater from roof to storage.

Pre-filtration gutter filter
2

Tank Design & Filtration

Make tanks functional

Right size, right material, in-tank filters based on your water demand and supply.

Modular Rainwater Storage Tank
3

Post-Filtration

On-demand recycling

For potable, flushing, drinking and other uses with easy, low-maintenance filters.

Multi-stage Post Filtration Cartridges
COMMON MISCONCEPTIONS

Rainwater Harvesting Is Not Just a Tank.

Rainwater can do much more than most people realise. Let's clear a few common misconceptions.

Groundwater recharge pit

“Rainwater harvesting means only recharging groundwater.”

Not necessarily.

Rainwater can be captured, treated, stored and reused for various applications.

Storage water tank

“I have installed a tank. My system is complete.”

A tank is only storage.

A functional system needs capture, debris control, filtration, storage and treatment.

Filtration unit canisters

“If I install a filter, I have a rainwater harvesting system.”

Filtration is only one part.

The entire system — from roof to reuse — needs to be designed properly.

Clear glass of pure drinking water

“All harvested rainwater can be used as drinking water.”

Not automatically.

Water quality depends on your roof, surroundings, storage and treatment for intended use.

Rainwater pouring off gutter

“It is only useful during the monsoon.”

It supports you year-round.

With proper storage, treatment and integration, it becomes part of your year-round strategy.

RAINWATER HARVESTING IS MORE THAN RECHARGE

The Common Myth — and the Reality

MYTH

Rainwater harvesting is only for groundwater recharging.

Only sends water to ground illustration

Only sends water to the ground.

REALITY

Rainwater can be reused and/or recharged — depending on your building's needs.

Capture, filter, store, reuse and recharge diagram

Capture. Filter. Store. Reuse. And recharge where appropriate.

₹

More economical

Often lower cost than large underground structures.

Easier to maintain

Above-ground and accessible systems.

Real value for users

You directly use the water, so it gets maintained.

Sustainable results

Reduces extraction, supports water security, and can complement recharge.

WHY ONE FILTER ISN'T ENOUGH

Rain needs staged filtration.

Like a bathroom drain mesh, a single filter can choke if it has to do everything. Rainfall varies in intensity and brings different sizes of debris. Our staged filtration system handles it step by step.

Have Specific Project in Mind ?
Pre-Filter unit
1 Pre-Filter

Stops big debris
(leaves, twigs, insects)

RidgeX storage tank filter
2 Tank Filter

Removes finer particles
(sediment, silt, dust)

Multi-stage post-filter
3 Post-Filter

Polishes the water
(as per use)

Leaves and debris
Leaves & Debris
→
Grit and sand
Grit & Sand
→
Fine sediment
Fine Sediment
→
Clean Water
Cleaner Water

A Complete Rainwater System

From roof to reuse — every stage matters.

1 Rooftop rainwater capture
✓ Capture

From rooftop

2 Gutter debris screen mesh
✓ Debris Control

Removes leaves and large debris

3 First flush diverter system
✓ First Flush

Diverts initial dirty rainwater

4 Multi-stage water filtration
✓ Filtration

Multi-stage filtration

5 Clean water storage tanks
✓ Storage

Tanks or modular storage systems

6 UV or secondary water treatment
✓ Treatment

As required for intended use

7 Water reuse for toilets and gardening
✓ Reuse

For toilets, gardening, cleaning or process use

8 Groundwater recharge modular structures
✓ Recharge

(Where appropriate)

Ready Rainwater Systems

Thoughtfully designed packages for homes and small buildings.

View All Products
Starter Rainwater Kit

Starter

Essential collection
  • Debris control
  • Basic filtration
  • Suitable for homes
Complete Rainwater Kit

Complete

For higher requirements
  • Advanced filtration
  • Storage / recharge ready
  • Suitable for larger homes
Larger Commercial Buildings

For Larger Buildings

Custom engineered systems
  • Hotels & Resorts
  • Apartments & Hostels
  • Schools & Institutions
  • Custom Designs

Real Projects. Real Impact.

REPUTATION & SCALE

Trusted. Recognised. Implemented.

National Startup Award Runner-up 2020
UNESCO Mention Global Recognition
CGWB Best Model Govt. of India Approved
300+ Live Sites Across India
WHAT OUR CLIENTS SAY

Trusted by Thousands

EXPERT GUIDANCE

Not Sure What Your Roof Needs?
Let's Design Your System.

Recharge to ground, reuse for building, or both? Don't guess filter stages or tank capacities. Consult our rainwater engineers for an engineered plan tailored to your site.

01

Roof & Catchment Audit

Evaluate roof surface area, gutter runoffs, and site layout slope.

02

Rainfall & Yield Math

Calculate realistic annual yield against your location’s precipitation data.

03

Recharge vs. Reuse Plan

Determine whether to store for flushing/gardening or recharge groundwater.

04

RidgeX Filtration Sizing

Select precise staged pre-filters and storage units to avoid system chokes.

No oversized tanks. No choked filters. Just an engineered rainwater plan built for your site.

CONSULTATION FEE
₹2,500 + GST
60-minute
site & system consultation
Book a Consultation
Talk to Engineers
Get Site Layout
Zero Guesswork
GOT QUESTIONS?

Frequently Asked Questions

Everything you need to know about our UNESCO-recognized rainwater harvesting systems, installation, and long-term benefits.

Unlike basic contractor installations that use simple mesh filters and open storage, Ridge provides an end-to-end engineered solution recognized with a UNESCO Award. Our 9-step model integrates automatic first-flush diversion, multi-stage graded filtration (down to micron levels), climate-proof storage, and real-time app telemetry with a lifetime AMC option.

Yes. With our multi-stage pre-filtration combined with post-filtration (activated carbon, sediment cartridges, and UV/softening modules), the harvested water meets stringent potable water standards, making it safe for drinking, cooking, bathing, and domestic chores.

A standard 2,000 sq. ft. rooftop in an area with 800–1,000 mm of annual rainfall can capture over 1.5 to 2.0 lakh litres of pure water each year. That typically covers 70% to 100% of an average household’s non-drinking or full domestic needs.

Most residential and commercial clients recover their entire capital investment within 1 to 3 years by drastically reducing or completely eliminating private water tanker purchases and municipal surcharge costs.

Our systems are engineered for minimal maintenance. The automatic first-flush diverter and self-cleaning filter meshes prevent debris buildup. Standard maintenance involves inspecting filter cartridges and clearing gutter leaves twice a year (before and after the monsoon), which is covered under our Annual Maintenance Contract (AMC).

Yes. Our modular filtration and storage units are designed for both new constructions and retrofitting into existing villas, apartments, schools, hotels, and industrial sites without disrupting existing civil plumbing.

Our designs incorporate intelligent siphonic overflows and groundwater recharge pits. When storage reaches 100% capacity, excess filtered water is safely directed to recharge underground borewells and aquifers, preventing local flooding and waterlogging.

We provide versatile modular storage solutions including slim vertical wall-mounted tanks, reinforced underground RCC/modular polymer tanks, and interconnected basement reservoirs tailored to your available footprint.

Yes. Our engineered layouts meet Central Ground Water Board (CGWB) guidelines and state municipal bylaws. We also provide complete documentation and hydraulic calculation reports for IGBC, GRIHA, and LEED green building certification credits.

Simply click the "Connect with an Expert" or "Book Free Consultation" button on this page. Our technical team will review your roof catchment area, analyze local rainfall metrics, and deliver a tailored hydraulic design along with an accurate ROI projection.

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