Rainwater harvesters

Trademarked white Rewatec logo.

Rewatec rainwater harvesters limit the damaging effects of runoff and give you 24/7 access to fresh water for toilets, gardens, fire hydrants, and more.

3D illustration of the Rewatec rainwater harvesting system installed on a residential property.
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Reduces drinking water use

Manages runoff and prevents floods

Earns points for LEED certification

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Simple installation

Pre-assembled systems

Residential and large-scale options

Ideal for new builds and retrofits

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Easy to use

Switches water source as needed

Needs no water softeners

Works in all seasons

rainwater harvester water management versatile designs
Versatile designs

Aboveground or underground tanks

Personalized storage capacities

Kits tailored to your needs

What is a rainwater harvester?

Transparent view of the Rewatec NEO 300E rainwater harvester storage tank

A rainwater harvester is the best way to collect and store rain for a complete range of applications, from single dwellings to commercial and municipal projects.

Rewatec rainwater harvesters (formerly Éconeau rainwater harvesting systems) are ideal for any roof type. They can easily be configured for winter use, giving you all-season access to abundant — and free — rainwater that contains no minerals, chemicals, or heavy metals.

Rewatec rainwater harvesters can reduce drinking water consumption by up to 70% for commercial and community applications.


  • homes and seasonal cottages
  • office buildings
  • schools
  • microbreweries and wineries
  • orchards
  • community pools
  • ice rinks
  • projects seeking LEED certification

Why harvest rainwater?

According to a report from Statistics Canada, the average Canadian uses 220 L of water at home every day.

This water is treated and distributed by costly municipal systems, and yet only a small fraction of it is used for functions that actually require potable water.

The scale of waste is enormous — and so is the opportunity it gives us to protect precious drinking water supplies by making better use of rain.

Pie chart showing potable and non-potable water use in the home

Uses for rainwater

Harvested rainwater can be used in countless ways. Some of the more common uses include:

  • flushing toilets and urinals
  • washing clothes
  • washing vehicles
  • watering and irrigation
  • filling pools and spas
  • flooding ice rinks
  • cleaning roads and sidewalks
  • supplying fire hydrants
  • watering livestock

How do our rainwater harvesters work?

3D illustration of the Rewatec rainwater harvesting system


Rainwater is first collected by rain gutters (for sloped roofs) or a drain (for flat roofs). It then reaches a primary filter that prevents leaves, insects, and other debris from entering the system. Water that passes through the filter flows into a storage tank.


Collected rainwater is stored in a leak-proof tank that is installed on the property or inside a building.

The tank is equipped with a circulation system that prevents water stagnation. During a downpour, this system evacuates liquid at the bottom of the tank to ensure that only the freshest water remains.

Rainwater use

Using harvested rainwater is simple. A specially designed pump directs stored water through a micro-filter that removes any small particles, then provides optimal pressure to supply appliances, plumbing fixtures, and building systems.

If no rainwater is available in the storage tank, all appliances are automatically and reliably supplied from the regular water system.

Rainwater harvester maintenance

Rewatec rainwater harvesters are designed to operate reliably and autonomously for years. But, like all rainwater recovery systems, they require periodic maintenance to ensure high performance.

As part of this simple maintenance schedule, the property owner should:

  • rinse ground filters twice per year (spring and fall)
  • rinse the toilet-supply filter (every three to six months)
  • empty aboveground tanks, open the taps, and put the pump into storage (for seasonal use)

Rainwater harvester warranty

Our rainwater harvesters come with a 10-year warranty for underground storage tanks.

Rewatec 10 year warranty

Rainwater harvester brochures, guides, and manuals


Rewatec rainwater harvesters brochure thumbnail – Residential – Canada




Rewatec rainwater harvesting professional guide thumbnail – Canada/USA


Pro guide




How big should your rainwater tank be?

Calculating the ideal capacity of your underground rainwater storage tank is easy!

Our simple tool finds your rainwater harvesting potential, estimates your consumption, and recommends the right storage tank capacity for your needs.

Go to calculator

Excavator lowering Premier Tech Water and Environment's 3,000 L underground rainwater harvesting tank into a residential yard.

Available models

We customize Rewatec rainwater harvesters based on your unique needs. Start by browsing through our range of products, then let us personalize your solution to help you get the most out of available rainwater.

Rainwater falling on a concrete surface.

Talk with an expert

Contact our expert in your area for more information about the Rewatec rainwater harvester that is right for you.

Talk with an expert