Rainwater Harvesting

WHY HARVEST RAINWATER?

“Rainwater is a renewable, sustainable and a high quality water source for home and commercial applications”
What is rainwater harvesting?

Rainwater harvesting is a technique used for collecting, storing, and using rainwater for landscape irrigation as well home domestic services. When it rains the rainwater pours off your roof, down through your gutters and runs off into your yard or street. With rainwater harvesting your rainwater is collected in a water storage tank or cistern and stored for later use. You can also tie the home or buildings “footing” drainage system into a collection system as well should you have seasonal high water tables.

The practice of collecting and storing rain water has been around for thousands of years and is always growing in popularity throughout our communities due to interest in reducing the consumption of potable water and the inherent qualities of rainwater which can be hard to beat with perfect PH balance. It is appropriate for large scale landscapes such as parks, schools, commercial sites, parking lots, and apartment complexes, as well as small scale residential landscapes.

The Benefits of Harvesting Rainwater

Rainwater is a renewable, sustainable and a high quality water source for your home, cabin and commercial applications ( view a picture below where we have installed a system at a Mill which is used to facilitate the bathrooms as well kitchen facilities ). Some of the benefits of collecting and storing rainwater include*:

  • Diminishing flooding, erosion and the flow to storm water drain by reducing peak storm water runoff in the wet seasons
  • Reducing water bills and demand on your community’s drinking water supply and well systems by using rainwater for flushing toilets, washing clothes, watering the garden and washing cars
  • Improving plant growth by using rainwater for irrigation because stored rainwater is free from pollutants as well as salts, minerals, and other natural and man-made contaminants, pathogins
  • Making use of a valuable resource that is FREE because let’s be honest..nothings free anymore!

*As rainwater may be contaminated due to pollutants, it is often not considered suitable for drinking without treatment and this can be accomplished by using a simple UV light for as little as $1800.00 Installed.

Basic configuration of a Rainwater Harvesting System

The basic principal of Rainwater harvesting systems is to channel rainwater from a catchment surface (roof or other raised solid surface or other viable source of storm water), through a distribution system (gutters, downspouts and pipes) and then into storage tank.

The storage tank can be above ground or underground and can be made from a variety of materials including plastic and metal. Water storage tanks should be covered to prevent mosquito breeding and to reduce evaporation losses, contamination and algal growth. Rainwater harvesting systems require regular maintenance and cleaning to keep the system hygienic.

If the storage tank is elevated you may not require a pump rather operated under gravity pressure. Pumps will allow for a multitude of uses from irrigation to facilitating a home water system.

Below are a couple of recent projects.

Two 2500G Poly tanks collecting water from the building roof system have bene installed on concrete blocks. This application stores the water which is facilitating two washrooms and a kitchen facility at a commercial property. The storm water is then passed through a pre-sediment filter then polished using a UV sterilization light making the water potable. A small pump and pressure tank are installed to deliver the water source to the building and fixtures. Tanks can be installed above grade, below grade, in crawl spaces, sheds etc.

This a low maintenance system requiring the sediment filter changed every 6 months and the UV bulb changed annually. Cost effective and simple is design. Total cost approx $300.00 annually to maintain.

RAINWATER HARVESTING SYSTEMS

Choosing the right rain water collection and storage system

There are several types of systems to harvest rainwater, ranging from very simple home water storage tanks to complex industrial water storage systems with high end internal pump systems. At Vortech all of our residential and commercial rainwater harvesting systems have the same principal of collecting rainwater, but do so in slightly different ways.

How do you choose the right rainwater collecting system ?

Before you choose a rain harvesting system we need to start by determining your homes water usage as this is not a “one size fits all application”, we want to fairly accurate. When you review your next water bill, note how many gallons of water you consumed. Then you need to think about how you will be using your stored rainwater. Some common uses are gardening, washing your car, washing off exterior paths and porches and other house and yard use items, etc. Finally you need to determine the square footage of your catchment area (normally your roof) as we apply a unit fixture “load” calculation which will include seasonal water highs.

The type of tank you choose will depend on the amount of water to be stored and the area available for installing the tank. The most important things to consider when choosing a rain harvesting system is that the system is sized to meet the water demand throughout the dry season and that the size of the catchment area or roof is large enough to fill the tank or as close to performing as intended as possible.

Read below to learn more about how each of our rainwater harvesting systems works and which one is right for your application.

Above Ground Metal Water Tanks

Use: Residential or Commercial
Material: Steel
Storage Capacity: 100 gallons – multi-thousands of gallons
Best Used for: Public areas where there might be risk of abuse / Locations where weather may be extreme

Above Ground Plastic Water Tanks

Use: Residential or Commercial
Material: Poly-Ethelyn
Storage Capacity: 75 gallon- 30,000 gallon
Best Used for: Residential use / More cost effective / simple installations

Underground Water Tanks

Use: Residential or Commercial
Material: Plastic / Steel / Fiberglass / Concrete
Storage Capacity: unlimited
Best Used for: Public or commercial sites / Projects looking to not be seen / Extreme Weather areas

Commercial Water Tanks

Use: Commercial
Material: Plastic / Steel / Fiberglass
Storage Capacity: 500 gallons – unlimited
Best Used for: Large commercial areas / Areas of possible tank abuse / Large storage capacity needed

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