City of Nanaimo Water Main Flushing Program

Regular water main flushing is an important component of a comprehensive water management program. The City of Nanaimo's Water Main Flushing Program flushes over 95 Kilometers of water supply mains and over 539 kilometers of distribution water mains. The City's Public Works Department annually flushes potable water at a high velocity through the water mains to ensure that all piping is refreshed and minor sediment within the pipe is removed. This is one of the methods that the City uses to help keep Nanaimo's drinking water safe and clean.

The annual water main flushing program begins in February with crews flushing water supply mains from South Forks dam into the City. Between March and May crews flush the in-town water distribution mains starting in the Cinnabar area then through town, finishing in the north end of Nanaimo.

For 2018, it is expected that there will be very little buildup of residue in the water mains. With high quality, treated water coming from our water treatment plant, there is very little sediment entering the system.

While this program is underway, short periods of low pressure and discoloured water may be expected. Any discolouration is temporary and not a health hazard. Residents are asked to minimize their water consumption if a change in water appearance is noticed. To clear water lines, residents are advised to turn on their cold water tap until the water runs clear. Anyone with a weakened immune system should reference information on Island Health's website.

Here is a look at our 2017 Water Main Flushing video:


We thank you for your cooperation and apologize for any inconvenience this program may cause.


Areas to be Completed in 2018

Phase 1: Complete


Water main flushing map Phase 1

- Harewood/Old City area bordered by Bowen Road in the North
- South to Tenth Street
- From Wakesiah Avenue, Nanaimo Lakes Road and Dogwood Road in the West
- East to Kennedy Street, Railway Avenue and Douglas Avenue
- Old City
- College Park area 
- Westwood Lake area 
- Miner's Park/Bird Sanctuary area 
- Stewart Avenue, Newcastle Avenue, Townsite Road area


Phase 2: Complete


Water main flushing map Phase 2

- Stewart Avenue/Estevan Road/Beach Drive area 
- Townsite Road/Waddington Road area
- Jingle Pot Road/Ashlee Road/East Wellington area 
- Garner Crescent/Emery Way area 
- Lower Departure Bay Area
- Stephenson Point/Departure Bay area 
- Waddington Road/Boundary Avenue area 
- Quarterway/East Wellington area 
- Bowen Road/Meredith Road/Crescent View Drive/Northfield Road Area 
- Smuggler's Hill/Sherwood Drive/Nottingham area 
- Uplands Drive/Norwell Drive/Country Club Drive area


Phase 3: Complete

Water main flushing map Phase 3

- Bowen Road/Meredith Road/Northfield Road area 
- Rosstown Road/Labieux Road/Diver's Lake area 
- Uplands Drive/Turner Road/Lost Lake Road/Rutherford Road area
- Metral Drive/Aulds Road/Brannen Lake area 
- North end of Hammond Bay Road/Applecross Road/Dover Road/Dickinson Road area
- Eagle Point/McGirr Road area


Phase 4: Complete             

Water main flushing map Phase 4

- Eagle Point/Rocky Point areas 
- Hammond Bay area from Brickyard Road in the west to Piper's Lagoon in the east 
- Protection Island; Cinnabar Valley area
- Extension Road/Roberta Road East and West areas


Phase 5: Complete


Water main flushing map Phase 5

- Hammond Bay Road/Piper's Lagoon/Canterbury Crescent/Upper Nottingham Drive area
- Duke Point
- Various parts of the City that weren't done previously

Last updated: April 24, 2018

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