October 26, 2018 - Tomahawk Cleans and Lines Watermains in Sherbrooke, Quebec

Pre-Project Condition:

This project contained 500m of 150mm (6”) ductile iron pipe on two residential streets. The pipes were highly tuberculated resulting in very low pressure, flow rates and chlorine residuals.

Sherbrooke Site 1 Sherbrooke Pipe 1
Pictures: Above left, cleaning and lining watermains in Sherbrooke, Quebec. Above right, initial internal condition of highly restricted, low flow watermain.

Project Details

Location: Rues Blanchard and Brouillette, Sherbrooke, Quebec
Tomahawk Licensee: Logistique Saint-Laurent Inc., Gilbert Group, Chicoutimi, QC
Pipe Size, Material: 150mm (6"), ductile iron
Total Length: 500m with 49 residential service connections
Pipe Age: Approximately 50 years
Cleaning Technology: Tomahawk™ System
Lining Technology: Tomahawk airborne lining, BluKote™
Results: The residents on these streets are now enjoying renewed water flow rates and pressure. The C-factor improved from a low of 15 to a high of 111, representing a 740% improvement. Chlorine residuals also improved resulting in higher quality drinking water. The pipe’s useable life has been extended by decades.
Sherbrooke Pipe before cleaning Sherbrooke Pipe after cleaning Sherbrooke Pipe after lining 3
Pictures: Above left, watermain before cleaning, center, after cleaning with Tomahawk, right, after lining with Tomahawk BluKote™.
For more information about Tomahawk cleaning and lining, contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. or 1-800-267-9810.

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Optimizing Pipe Rehabilitation