Rose Valley Water Treatment Plant | City of West Kelowna

Updated: June 15, 2026:

Planned, ratepayer-approved adjustments in 2026:

No change occurred on your January bill, which covered the last quarter of 2025.
For 2026 quarterly bills, the first being sent in April:

We removed $37.50 from the quarterly RV Residential Flat Water Rate for the per parcel share of the Rose Valley Water Treatment Plant and Connecting Transmission Mains Project.
The quarterly RV Residential Flat Rate increased by $1.80 to cover actual operational costs for 2025 and forecast for 2026.
In 2025, the quarterly RV Residential Flat Water Rate was $215.14.
In 2026, the quarterly RV Residential Flat Water Rate is $179.44 ($215.14 - $37.50 + $1.80).
The $37.50 removed from quarterly utility bills has been transferred to an ***annual parcel tax; property taxes notices will be mailed in late May.

The ***annual parcel tax will be $171.89, which is equal $37.50 X 4, plus $21.89 for interest.
- The original estimated parcel tax amount was $181 in 2025; final calculations confirmed the amount to be $171.89 to account for Municipal Finance Authority interest at the time of borrowing and additional parcels added to the system, as of March 15, 2026.

***The $171.89 annual parcel tax does not apply to those who prepaid their share.

For previous community updates, the 2024 Annual Water Report, monthly water data and additional information, please visit:

If you have further questions or require additional information, please email us, we are here to help.

The Rose Valley Water Treatment Plant is the single largest construction project the City of West Kelowna has ever undertaken.

Total water capacity: 70 million litres per day; expandable to 115 million litres in future.
Size of main plant, excluding holding reservoir: Three-stories, 5,245-square-metres.
Approximate population of Rose Valley Water Treatment Plant Service Area as of February 2026:19,700, next estimate due February 2027.
*Approximate number of connections as of March 2026: 8,600.

*Number changes as new parcels are added in the service area; if you require more current numbers, please, email us.

Treatment methods: Coagulation, flocculation, dissolved air flotation, filtration, ultraviolet disinfection, and chlorination.
Objectives: Multi-barrier treatment to improve the quality, taste, colour, and smell of the raw source water and provide drinking water that meets federal and provincial guidelines.
Cost: $75 million with $41 million from a federal and provincial grant, $6.1 million from development cost charges, $4.4 million from Rose Valley water reserves and $23.5 million from ratepayers through one-time upfront payments or borrowing over 25-years.

For questions about the Rose Valley Water Treatment Plant, please contact the numbers below: