science

Rainwater harvesting in Canada

Rainwater harvesting in Canada is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Rainwater harvesting in Canada rather than just read about it. In short: Rainwater harvesting is becoming a procedure that many Canadians are incorporating into their daily lives, although data does not give exact figures for implementation. Rainwater can be used for a number of purposes including stormwater reduction, irrigation, laundry and portable toilets.

Key takeaways

Rainwater harvesting in Canada belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Rainwater harvesting in Canada to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Rainwater harvesting in Canada from memory before moving on to harder problems.

Reference excerpt

Rainwater harvesting is becoming a procedure that many Canadians are incorporating into their daily lives, although data does not give exact figures for implementation. Rainwater can be used for a number of purposes including stormwater reduction, irrigation, laundry and portable toilets. In addition to low costs, rainwater harvesting is useful for landscape irrigation. Many Canadians have started implementing rainwater harvesting systems for use in stormwater reduction, irrigation, laundry, and lavatory plumbing. Provincial and municipal legislation is in place for regulating the rights and uses for captured rainwater. Substantial reform to Canadian law since the mid-2000s has increased the use of this technology in agricultural, industrial, and residential use, but ambiguity remains amongst legislation in many provinces. Bylaws and local municipal codes often regulate rainwater harvesting. Multiple organizations and companies have developed in Canada to provide education, technology, and installation for rainwater harvesting. These include the Canadian Association for Rainwater Management (CANARM), Canadian Mortgage and Housing Corporation (CMHC), and CleanFlo Water Technologies. CANARM is an association that prioritizes education, training and spreading awareness for those entering the rainwater harvesting industry.

Property rights The National Plumbing Code permits the collection of rainwater for non-potable uses such as toilet flushing and outdoor irrigation throughout Canada. The right to harvest and use rainwater is determined by the provincial government and municipal bylaws. However, a majority of the provinces lack any significant legislation. The law of capture is not well defined and it varies for residential and non-domestic uses. When building a rainwater storage system, it is required that the design follows closely to the provincial codes and municipal bylaws. Multiple publications and reports have been developed by the Canadian Mortgage and Housing Corporation (CMHC) in order to aid Canadians in designing and installing rainwater capture systems that comply with these codes, regulations and bylaws.

Provincial property rights Many provinces have outlined little to no provincial property rights pertaining to rainwater. Listed below are the provinces with some provincial legislation. However, many local municipalities have bylaws outlining criteria for capture and storage containers among other articles related to rainwater harvesting.

Alberta Alberta has a set of Rainwater Harvesting Guidelines for residential use. They are recommended for the safe design, construction and maintenance of residential rainwater harvesting systems. The guidelines provide additional detail than what is present in the current code and supports conformance to CAN/CSA 128.1 Design and Installation of Non-Potable Water Systems/Maintenance and Field Testing of Non-Potable Water Systems. The Alberta Building Code and the National Plumbing Code requirements have precedence over these guidelines. In addition to the guidelines, a handbook was developed to provide broader understanding of the technical components of the guidelines.

British Columbia Rainwater in British Columbia appears to be common property subject to the law of capture. Effectively, rainwater belongs to no one and everyone until it is captured. While landowners do not have a property interest in water until it is captured, their right to harvest rainwater is unrestricted and not subject to concerns of downstream water users. Rainwater is not included in the Water Act's system of prior allocation. The likely common law position does not recognize correlative rights of other users to share equitably in the common resource of rainwater.

Ontario In Ontario, the province permits the use of rainwater for flushing toilets and urinals, as well as for sub-surface and below ground irrigation systems. A large number of standards and regulations have been put in place regarding catchments, conveyance networks, and storage containers in Ontario Guidelines for Residential Rainwater Harvesting Systems. Since the temperature during winter months in Ontario drops below zero, rainwater is at a high risk of freezing. Therefore, the province of Ontario places a strong significance on guidelines to ensure that rainwater is in a controlled temperature environment. In addition, to avoid freezing in the pipe network, the water must be properly controlled via draining and temperature controls. Various systems and scenarios have been outlined regarding overflow management, pressurization, and back-flow prevention.

Applications of rainwater harvesting in Canada

Agriculture In Canada, rainwater harvesting used as a means of irrigation is not popular among farmers. Because of a rise in ecofarming, many farmers have implemented these systems. The uses for the rainwater harvested for agriculture includes irrigation and water for livestock. Often the water collected is redirected to a deep pit with percolation.

Leadership in Energy and Environmental Design (LEED) Leadership in Energy and Environmental Design (LEED) is a rating system that is recognized as the international mark of excellence for green building in 150 countries. This includes Canada as recognized by the Canada Green Building Council. They give points for obtaining certifications to buildings with rainwater harvesting technologies implemented. These credits include the following: Stormwater quantity and quality controls to reduce runoff, increase reuse, and stop pollutants; efficient landscaping for rainwater reuse; innovative wastewater technologies for non-potable applications such as toilet flushing and process water; water efficiency to reduce the burden on municipal water supply and wastewater systems; and recycled content for use in rainwater harvesting materials.

Industry

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Rainwater harvesting in Canada

Start with the simplest possible case. Write down what Rainwater harvesting in Canada claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Rainwater harvesting in Canada before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Rainwater harvesting in Canada ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Rainwater harvesting in Canada

In research: Rainwater harvesting in Canada appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Rainwater harvesting in Canada in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Rainwater harvesting in Canada is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquifers in Canada, Environment of Canada, Irrigation in Canada, so understanding it makes those chapters shorter.
In everyday life: Look for Rainwater harvesting in Canada outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Rainwater harvesting in Canada in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rainwater harvesting in Canada means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Rainwater harvesting in Canada out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rainwater harvesting in Canada in simple terms?

Why does Rainwater harvesting in Canada matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Rainwater harvesting in Canada?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Rainwater harvesting in Canada.