Temporary Drinking Water Supply

Design and Installation

In Quebec, access to drinking water for all citizens, at all times, is a fundamental right under the Act to affirm the collective nature of water resources and to promote better governance of water and associated environments. Concurrently, the Municipal Powers Act requires municipalities to maintain this service on their territory at all times, including during construction work.

Drawing on field expertise acquired since 1992, we design robust and compliant temporary supply systems in Quebec City, ensuring the continuity of this essential service regardless of what happens under the streets.

At the core of every project, Can-Explore ensures a seamless synergy between municipalities, general contractors, and citizens, transforming logistical challenges into collaborative successes.

Design and Installation: Can-Explore’s Integrated Expertise

A poorly designed temporary water supply network can result in insufficient pressure for fire protection or backflow contamination, leading to public health consequences.

In Quebec, the design of a temporary water mains network is highly regulated. Plans and hydraulic calculations must be approved and certified by an engineer, in compliance with the BNQ 1809-300/2023 standard.

Can-Explore manages the entire intervention cycle, from certified design to field execution. Professional responsibility and installation expertise fall under a single, unified team.

Our Engineer-Certified Hydraulic Design Services

Can-Explore places engineering at the heart of its services to guarantee network safety. Every temporary supply project delivered by Can-Explore complies with the standards, thereby covering the essential elements for site compliance:

Signed and sealed plans and hydraulic calculations

Certifying network compliance and ensuring prompt delivery for approval by the site supervisor or the municipality.

Maintenance of operating pressures

With an analysis confirming that the temporary network meets the existing network’s requirements, using real data for accurate hydraulic modeling.

Fire protection capability

With pipe diameters sized to ensure the flow rates required by civil security (150 mm or more when temporary fire hydrants are needed).

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Backflow prevention

Preventing any cross-contamination with the permanent network.

Our Temporary Network Installation Services

Once the plans are approved, our field teams proceed with the physical deployment of the surface network, typically along sidewalks, at the edge of the roadway, or on private property. The preferred materials are rigid UPVC and HDPE (high-density polyethylene).

The connection to the existing network is generally made from a fire hydrant upstream of the work zone, equipped with double check valves to protect the integrity of the main network against any backflow from the temporary installation.

Network Cleaning and Disinfection Protocol

Chaque raccordement commence par une préparation minutieuse. Nos expert·e·s procèdent au passage d’une torpille (buse de nettoyage) afin d’éliminer toute particule résiduelle avant la mise en service. Ce nettoyage est suivi d’un rinçage complet du système. Nous appliquons les normes les plus strictes pour l’a

Every connection begins with meticulous preparation. Our experts pass a cleaning pig (nozzle) to remove any residual particles before commissioning. This cleaning is followed by a complete system flush. We apply the strictest standards for sanitizing temporary pipes:

  • Shock disinfection: Initial injection at 50 PPM to eliminate all contaminants.
  • Sequential validation: Control tests are performed to confirm the level reduction to 25 PPM, then to 10 PPM, ensuring a safe transition to distribution.
  • Microbiological sampling: At the end of the process, samples are systematically taken every 150 meters of pipe, then analyzed in a laboratory.

Maintenance of Residual Chlorine Using Automatic Dosers

During periods of extreme heat, the water temperature in pipes exposed to the sun can promote bacterial growth. To mitigate this risk, Can-Explore can deploy automatic chlorine dosing systems, devices that ensure a compliant chlorine level 24/7.

For each project, our teams ensure that the flow and pressure at the fire hydrants meet the city’s requirements, while coordinating valve operations with the competent authorities.


24/7 Emergency Service

A break in a temporary network (pipe struck by a snowplow, vehicles, accidental valve manipulation) can occur at any time. Can-Explore provides continuous intervention to restore service within the timeframes required by municipal specifications and to prevent any penalties.

To contact us:
Monday to Friday, 7:00 a.m. to 4:00 p.m.: (418) 651-9306
Evenings and weekends: (418) 929-7194

A Service Built on Stakeholder Coordination

For municipalities

We guarantee compliance with the Water Act and the standards of the Regulation respecting the quality of drinking water (RQEP), while producing the technical documentation required for eligibility in provincial grant programs.

For general contractors

We work closely together in the field. Our team ensures that the temporary network plans are available, legible, and up to date for all parties involved, and that connections, control valves, and maintenance keep pace with your site.

For citizens and merchants

We ensure direct communication with users at every step of the service, from installation notices to potability confirmation, ensuring no one is left without information.

Request a quote: temporary drinking water supply

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