Smart Rain · smart rainwater

The perfect technology for your irrigation project.

The Smart Rain cistern brings together all of ECOCASA's experience in water efficiency — designed for a more sustainable build, with simple installation and tailored calculations.

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Since 2001 · water solutions throughout Brazil

Irrigation and reuserainwater ABNT NBR 15.527reference standard Residential line · up to 200 m² Industrial line · over 300 m²

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The solution

Water intelligence that works for you.

Smart Rain arrives ready for your consumption and handles the entire rainwater cycle — from harvesting to reuse — without complicating the build.

Calculations tailored to your property

Essential items factory-installed

Quick, simple installation

I want a tailored design

Smart Rain tank for rainwater harvesting and reuse

up to 70%

water savings

Why Smart Rain

Everything your project needs, in a single system

Tailored sizing

We size the cistern based on your actual consumption and catchment area, so you never pay for capacity you won't use.

Irrigation and reuse

Treated rainwater available for garden irrigation, cleaning and other non-potable uses, with guaranteed quality.

Fast installation

Essential items come factory-assembled, reducing build time and simplifying your technical team's work.

Applications

Where Smart Rain comes into play

From harvesting to automated irrigation — water engineering that turns rainwater into constant savings for your garden and your project.

Rainwater harvesting system

We collect rainwater from the roof with filtration and a first-flush diverter, carrying it clean to the tank — roof harvesting in line with Brazilian standard ABNT NBR 15527.

Irrigation cistern

A smart cistern sized by catchment area and irrigation demand, keeping gardens and green areas always watered without weighing on the water bill.

Rainwater reuse

100% automated rainwater reuse: the system manages pumping and storage for non-potable purposes with up to 70% savings in potable water consumption.

Rainwater harvesting

Using rainwater for irrigation reduces dependence on the public network and adds value to your project — rainwater harvesting with plug-and-play installation.

Step by step

How it works

Smart Rain FRP tank for rainwater storage — **Smart Rain storage** — a highly watertight FRP tank to store harvested and filtered rainwater.

Smart diversion

The system automatically separates and discards the first flush of rain, which carries impurities from the roof.

Filtration and storage

Clean water is filtered and stored in the cistern, with the level monitored in real time.

Always available

When the reserve runs low, the system automatically switches to mains water, without you having to do anything.

Automated reuse

Rainwater is automatically directed to irrigation and other uses, closing the cycle efficiently.

Step by step

Quick and easy installation

Click each number on the drawing to see the stage — from preparing the trench to backfilling. The exact dimensions of each model are in the product manual.

Cutaway of a buried ECOCASA tank: excavated trench, gravel and sand bedding, tank in place and piping connected

Stage 01

Digging the trench

Dig/excavate the trench to the dimensions given in the product manual.

Stage 02

Preparing the bedding

Prepare the bedding with 20 cm of No. 1 crushed stone and 20 cm of coarse sand, forming a firm, level base.

Stage 03

Placement and anchoring

Place the tank in the trench and anchor it if necessary, ensuring the inlets and outlets are aligned.

Stage 04

Partial backfill

Add sand up to half the tank's height, surrounding it evenly.

Stage 05

Filling

Fill 50% of the tank's volume with water to balance pressures during backfilling.

Stage 06

Inlet and outlet

Connect the system's inlet and outlet piping according to the hydraulic design.

Stage 07

Consumption, delivery and power

Connect the consumption/delivery piping and the power supply for the automated system.

Stage 08

Backfill and landscaping

Complete the final backfill and landscaping — the system stays buried and invisible in the garden.

Completed projects

Smart Rain in the field

Smart Rain tank being buried during installation

Frequently asked questions

Smart irrigation cistern: what you need to know

What is Smart Rain, the smart irrigation cistern?

Smart Rain is a smart rainwater harvesting cistern for irrigation and reuse, 100% automated, with quick and simple installation. It autonomously collects, filters, stores and pumps rainwater to supply gardens and green areas.

How does the Smart Rain harvesting system work?

Rainwater is collected from the roof and passes through the first-flush diverter and filtration before reaching the tank. Then the pumping and storage automation distributes the water to irrigation, with no manual intervention.

Can I safely use rainwater for irrigation?

Yes. Harvesting roof rainwater for non-potable purposes such as irrigation follows Brazilian standard ABNT NBR 15527. Filtration and first-flush diversion ensure suitable quality to keep gardens and green areas always watered.

How much potable water does Smart Rain help save?

By reusing rainwater for irrigation, Smart Rain delivers up to 70% savings in potable water consumption. The benefit is direct: less dependence on the public network and gardens that stay green without weighing on the bill.

How is an irrigation cistern sized?

Sizing takes into account the roof catchment area and the project's irrigation demand. From these parameters, we define the ideal storage volume to make the most of the rainwater available throughout the year.

Is installing the rainwater reuse system complicated?

No. Smart Rain offers quick, simple plug-and-play installation. The system arrives pre-sized and 100% automated, reducing build time and speeding up the payback on the investment.