The Regulation of Pesticides in Canada

Pesticides are carefully regulated in Canada through a program of pre-market scientific assessment, enforcement, education, and information dissemination. These activities are shared among federal, provincial/territorial and municipal governments, and are governed by various Acts, regulations, guidelines, directives and by-laws. Although it is a complex process, regulators at all levels work together towards the common goal - helping protect Canadians from any risks posed by pesticides and ensuring that pest control products do what they claim to on the label.

Distribution of principal responsibilities

Federal (Pest Management Regulatory Agency of Health Canada)

  • Pest Control Products Act (PCPA) and Regulations
  • Pesticide registration and re-evaluation
  • Human Health and Safety
  • Environmental impact
  • Value/efficacy assessment
  • Alternative strategies
  • Compliance and enforcement


  • Transportation, sale, use, storage/disposal
  • Training/certification and licensing of applicators/vendors
  • Spills/accidents
  • Permits/use restrictions
  • Compliance and enforcement


  • By-laws for municipal (and, in some cases, private/residential) lands only

The Federal role

The Pest Management Regulatory Agency (PMRA) of Health Canada has the mandate to protect human health, safety and the environment by minimizing risks associated with pesticides, while providing Canadians access to the pest management tools they require for agriculture, forestry, industry, and personal use.

Pesticides imported into, sold or used in Canada are regulated nationally under the Pest Control Products Act and Regulations (PCPA). The PMRA is responsible for administering this legislation, registering pest control products, re-evaluating registered products and setting maximum residue limits under the Food and Drugs Act.

Companies that wish to have the right to sell a pest control product in Canada must submit detailed information and data to be evaluated by the PMRA. Companies must provide all the scientific studies necessary for determining that the product is acceptable in terms of safety, merit and value. Depending on the complexity of the submission, a complete evaluation can take anywhere from a number of weeks, to a year or more. The evaluation results either in the product being granted registration and allowed for sale and use in Canada, or in the product being refused registration.

The PMRA registration process


Before a submission is evaluated for health and environmental considerations, and for its value, (including efficacy), it is first examined by Screening Officers of the PMRA's Submission Management and Information Division (SMID). The purpose of the initial screening is to make sure that submissions meet the format, content and fee requirements of the Agency before they are sent for detailed evaluation. The screening process ensures that only complete, accurate and standardized submissions are brought forward for assessment. To this end, the Agency provides to industry detailed pre-submission guidance on administrative procedures and data requirements. In the Screening Unit, preliminary analyses of the studies are also carried out in order to determine if they are acceptable and whether they comply with international protocols.



The PMRA's Health Evaluation Division (HED) has three main areas:

The Toxicological Evaluation Sections (Fungicides, Herbicides, Insecticides and Antimicrobials) identify possible human health effects of pesticides, and establish the levels at which humans can be exposed to the products without any harm. Studies assessed include short and long-term, carcinogenicity (the capacity to cause cancer), genotoxicity (the capacity to cause damage to chromosomes), and teratogenicity (the capacity to produce fetal malformations), among others. These toxicology sections are responsible for setting Acceptable Daily Intakes (ADI) -- the amount of a compound that can be consumed daily for a lifetime with no adverse effects. ADIs always have safety factors built in, ranging from 100 to 1000. These safety factors are designed to take into account the potential differences in response, both within the same species (i.e., adults versus children) and between species (i.e., animals versus humans).

The Occupational Exposure Assessment Section (OEAS) performs exposure assessments on all new active ingredients and all major new uses of a pesticide in order to determine how much exposure to a pesticide could occur in a typical day. These assessments take into account the different exposures that people could have to pesticides, such as those who work with the pesticides (formulators, applicators, and farmers) and bystanders (people working or living near where a pesticide is used). They also take into consideration the differing exposures that adults and children would have. Data considered include residues found in air and on surfaces indoors and outdoors following application in domestic, commercial, and agricultural situations. Routes and duration of exposure, and the species tested in toxicity studies are also considered. Assessments of the effectiveness of personal protective equipment are often performed, and wearing such equipment can be required as a condition of registration.

The Food Residue Exposure Assessment Section (FREAS) evaluates every submission where a product could come in contact with food, including field crops, meat and dairy products, and processed foods. These evaluations are conducted in order to set the maximum residue limits (MRLs) for pesticides on food, both domestic and imported under the Food and Drug Act. Dietary Risk Assessments (DRAs) are also carried out to assess the potential daily intake of pesticide residues from all possible food sources. DRAs take into account the different eating patterns of infants, toddlers, children, adolescents and adults, and so include a detailed evaluation of the foods and drinks that infants and children consume in quantity such as fruits and fruit juices, milk and soya products.


The Environmental Assessment Division (EAD) evaluates data on the environmental chemistry and toxicology of products, as well as their environmental fate i.e., what happens to the pesticide once it enters the environment. To address environmental concerns that may arise from the intended use of a product, EAD also makes recommendations for restrictions on use that would lessen risk. This could include label statements outlining buffer zones, timing and frequency of applications, rate at which the product can be applied, etc. As with the other PMRA divisions, EAD maintains contact with their counterparts in other federal and provincial government departments and in other countries so that they have access to the most up-to-date information, standards and protocols.

Laboratory Services

The PMRA's Laboratory scientists evaluate the product chemistry data that companies must provide as part of submissions for registering any pest control product. This ISO-accredited laboratory also performs approximately 1500 guarantee, formulation and residue analyses every year in support of the PMRA's compliance investigations and microcontaminant, guarantee, and misuse inspection programs.

Value/efficacy assessments

An applicant for registration of a pesticide must establish that the product has merit and value for the purposes claimed when the product is used according to label directions. Product Sustainability and Coordination Division (PSCD) evaluators carry out these assessments, which include determining the efficacy or effectiveness of the product at various doses. This helps establish the lowest effective rate at which pesticides can be applied, and contributes to the minimizing of risks to health and the environment, crop damage and resistance problems. These assessments have led to many Canadian products having up to 50 per cent lower label use rates than the same products in other countries. Efficacy assessments also help protect users from deceptive claims regarding the effectiveness of pest control products. The "value" aspect of the assessment is linked to efficacy, and looks at whether the product improves crop yield, reduces damage by pests etc., depending on the intended use of the product.


New Products: Once all the component parts of a submission have been evaluated, PMRA determines whether or not a product should be granted registration. Only if there is sufficient scientific evidence to show that a product does not pose unacceptable health or environmental risks and that it serves a useful purpose will a decision to register be made. A registration is normally granted for a term of five years, subject to renewal. However, the term will be limited to less than five years where it is determined that the risks or value should be reviewed after a specified period. In all cases, conditions of registration are specified, including detailed use instructions, so that the product can be used safely. PMRA can also recommend to the Minister that registration be refused.

Registered Products: After a product is registered, PMRA may re-evaluate the products resulting in changes to the use pattern, label statements, or classification of a product in order to ensure that the risks and value of that product remain acceptable. Where it is determined that the risks to human health or the environment are no longer acceptable, or that the product is without value for its intended purpose, the registration is refused.

Other PMRA Responsibilities

Alternatives and Regulatory Affairs

PMRA's Alternative Strategies and Regulatory Affairs Division develops and implements federal policy and legislation for pest control products, and works with other government bodies, grower groups, research facilities and industry to facilitate information exchange and to promote risk reduction. Cooperative efforts include:

  • Integrated Pest Management Partnership Projects;
  • Initiatives to facilitate access to new technologies (e.g. microbials, pheromones);
  • Participation within international bodies such as the North American Free Trade Agreement (NAFTA) and the Organization for Economic Cooperation and Development (OECD) for the development of risk reduction policies, joint reviews and the harmonization of data requirements; and for cooperation with international initiatives such as Persistent Organic Pollutants (POPs) and Prior Informed Consent (PIC) policies.
  • Working with other governmental departments and the Federal/Provincial/Territorial Committee on pesticide-related issues;
  • Active involvement with agriculture, forestry, aquaculture and other sectors to identify and manage problems using sustainable pest management practices.

Compliance and Regional Operations

Working with other federal and provincial ministries, PMRA regional offices promote and verify compliance with the PCP Act through investigations, inspections and consultations. They have the mandate to investigate the use, sale and importation of products; perform on-site inspection of usage and storage of products; do soil, crop and product sampling; and to educate individuals, local officials and grower groups as to regulatory requirements. Where contraventions of the Act or regulations occur, appropriate enforcement measures may be taken.


The PMRA is committed to providing an open, transparent and participatory process for the regulation of pesticides. The agency seeks the advice of Canadians by frequent consultations with its advisory bodies, including a federal-provincial-territorial committee. It solicits public comment on proposals for new policies and programs as well as on major pesticide registration decisions. Information on the the PMRA's extensive involvement in international pesticide-related efforts, notably the NAFTA Technical Working Group (TWG) on Pesticides and the OECD's Pesticide Programme is circulated broadly and regularly, and a consultation meeting with stakeholders is held prior to the yearly full meeting of the NAFTA TWG.

The Agency's Web site at all of the publications issued by the PMRA and a wide range of information and data useful to the general public and industry. The PMRA also operates a toll-free information line to answer pest management-related inquiries. The number is 1-800-267-6315 (613-736-3799 outside of Canada). The PMRA Publications Coordinator can be reached at:

Pest Management Regulatory Agency
2250 Riverside Drive
Ottawa, Ontario K1A 0K9
Fax: (613) 736-3798

The Provincial/Territorial role

Only pesticides that are registered for use under the PCPA may be imported into, sold or used in Canada. However, the provinces and territories may regulate the sale, use, storage, transportation and disposal of registered pesticides in their jurisdictions as long as the measures they adopt are consistent with any conditions, directions and limitations imposed under the PCPA or other federal legislation. For example, a province or territory may prohibit the use of a registered pesticide in its jurisdiction, or it may add more restrictive conditions on the use of a product than those established under the PCPA. However it may not authorize the use of a product that has not been approved under the PCPA, and may not relieve the user of the obligation to comply with conditions, directions and limitations imposed under the PCPA.

Provinces and Territories administer a pesticides management program that includes education and training programs, the licencing/certification of applicators, vendors and growers, and issuing permits for certain pesticide uses. Other important roles - carried out in cooperation with PMRA regional offices - are those of enforcement and compliance monitoring, and response to spills or accidents.

Listed below are some of the areas of regulatory responsibility that can be held by provinces and territories. Please consult provincial/territorial officials (see list attached) for specific legislation and requirements.

Classification of pesticides for sale and use

Pesticide product class designations (domestic, commercial, restricted) are reviewed and/or products are assigned to schedules to limit the sale and use of certain products to the appropriate individuals/operators who are trained to use them.

Vendor/dispenser licensing; applicator certification, training and licensing

Retail pesticide vendors and pesticide applicators are required to be trained and licensed to ensure that products are used responsibly.

Grower and vendor certification

Growers and representatives of vendor outlets must be trained and certified to ensure responsible purchase and use of products.


Applicators can be required to obtain use permits for restricted class pesticides (e.g. for application by air, fumigation, or for aquatic use), that set out strict conditions for use in the province/territory (e.g. the requirement for buffer zones).


Pesticide applications on public land, and by Pest Control Operators (PCO) on residential property, require the posting of signs in most provinces.

Transport, storage and disposal

Provincial/territorial regulatory departments can establish additional requirements for the safe handling and management of pesticides to meet local needs/conditions.

Compliance and enforcement

Provincial authorities set fines, revoke/refuse licences, issue warnings, issue control orders etc.

The Federal Provincial Territorial Committee on Pest Management and Pesticides (FPT Committee)

This committee brings together federal and provincial/territorial pesticide officials together to exchange information and expertise. The FPT Committee provides advice and direction to governments on programs, policies and issues relating to pesticides and actively pursues solutions to shared issues of concern through the activities of its working groups. Progress is being made toward enhancing sustainable pest control practices in Canada and harmonizing wherever possible the pesticide-related programs and policies of the federal and provincial/territorial governments.

Contact your provincial/territorial agency for questions regarding use permits and classifications

Prince Edward Island:
Department of Agriculture and Forestry
British Columbia:
Ministry of Environment, Lands and Parks
Nova Scotia:
Department of the Environment
Sustainable Production Branch, Saskatchewan Agriculture and Foods
Pesticide Management Branch, Alberta Environmental Protection
Northwest Territories:
Environmental Protection Service, Resources, Wildlife and Economic Services
New Brunswick:
Department of the Environment
Ministère du Développement durable, de l'Environnement et de la Lutte contre les changements climatiques
Environmental Protection, Department of Sustainable Development
Department of Renewable Resources
Department of Environment and Labour; Department of Forest Resources and Agrifoods
Pesticides Section, Ontario Ministry of Environment and Energy
Manitoba Agriculture

Municipal/Local role

Provincial/territorial jurisdictions may allow cities, towns, and municipalities to enact by-laws which set further conditions on the use of pesticides, such as when and where certain types of pesticides (usually lawn, turf and garden products) may be used.

Pesticide Terminology

Active Ingredient:
That ingredient of a pesticide that actually controls the targeted pest.
End-Use Product:
A control product that has been manufactured, packaged and labelled in a form that is usable by the consumer.
Ingredients that serve a purpose other than the actual control of the targeted pest (e.g. solvents to dissolve solids, emulsifiers to prevent the settling of liquids in the container, carriers to deliver the active ingredient uniformly to the site, etc.)
The amount of active ingredient contained in a product, expressed as either a percentage or weight. The PCP Act requires that the guarantee be stated on the label.
The product label which is approved as part of the registration process contains the conditions of registration which, along with the PCPA and regulations, govern the use of the product. In effect, therefore, the label is a legislative document. Use of a product in a manner that is inconsistent with the directions or limitations on the label is prohibited. Any control product offered for sale in Canada must bear the approved label. Advertisements for the product must relate only to the claims carried on the label.
PCPA Registration Number:
A four or five digit number assigned to each registered pest control product by the PMRA. Unless expressly exempt by regulation under the Act, all pest control products must be registered and be issued a PCPA registration number before being permitted for sale, import or use in Canada.
Any injurious, noxious or troublesome insect, fungus, bacterial organism, virus, weed, rodent or other plant or animal.
Pesticide/Pest Control Product:
Any product, device, organism, substance or thing that is manufactured, represented, sold or used as a means for directly or indirectly controlling, preventing, destroying, mitigating, attracting or repelling any pest. Control products include active ingredients used in the manufacture of end-use products and the end-use products themselves. Includes herbicides, insecticides, fungicides, antimicrobial agents, pool chemicals, microbials, material and wood preservatives, animal and insect repellents, and insect- and rodent-controlling devices.
Organization or individual that holds the certificate of registration and is thereby responsible for the product. A registrant can be a chemical company, federal or provincial agency, importer or any person wishing to market a pest control product in Canada. The registrant's name and address must appear on the product label.
The specific pest(s) the product is designed to control and the sites where the product can be used. Each pest/site combination constitutes a use (e.g. dandelions on lawns; fleas on cats; fungi on potatoes etc.)

For complete, legal definitions of these and other terms, please refer to the PCP Act and Regulations, available from the PMRA, or at

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