Denver Siding Water System

The Denver Siding Water System is under a 
Boil Water Notice


Village of New Denver - Denver Siding Boundary Extension

The Village of New Denver and the RDCK has secured grant funding for system upgrades which would allow for the Denver Siding Water System to be included in the Village of New Denver's boundary extension. A geoechnical assessment and general engineering are in progress as of August 2018.

More information can be seen on the Village of New Denver's "Process and Timeline" document.

Annual Water System Information

2019 Annual Water System Information Brochure.

Size and number of connections

The system services 21 active connections.


The system is located northeast of the Village of New Denver and is off of Highway 31A. New Denver is within RDCK Electoral Area H.


The Denver Siding water system derives source water from Esthwaite Spring, Lloyd Spring, and Aylard Creek. Intakes on all three sources are relatively susceptible to rock slides and sediment intrusion. The supply area is designated as a Community Watershed.

System Description

Insufficient information exists regarding when this system was first developed; however, some system components were replaced in 1973. The system was converted to an RDCK service in 1993.


The Denver Siding Water Users drinking water is an untreated surface water source.  As such, it is open to contamination by potentially infective doses of disease causing microorganisms at any given instance.  Micro-organisms which cause gastro-enteric diseases in humans such as Campylobacter, Salmonella, and Giardia and Toxoplasmosis are known to be transmitted through drinking water that has been contaminated with the feces of domestic animals and wildlife, including birds and rodents.  Infections in individuals are known to sometimes be asymptomatic, rather than acute.  Such infections are known to sometimes result in long term health impacts on an individuals’ health.  Examples are the inability to digest fat soluble vitamins (Giardiasis);  Guillain-Barre Syndrome (a neurological disorder known to be triggered by Campylobacter Enteritis); and reactive arthritis (Salmonella). 

Untreated surface water drinking water is not considered safe to ingest.  A Boil Water Notice is recommended for Users to lower the health risk.  The Boil Water Notice is intended to be a temporary risk mitigation measure, until steps have been taken to ensure the water is safe to drink. 

Boil Water Notice

A boil water notice was issued to the residences of Denver Siding Water Users water system. This water system is not adequately treating the water distributed to its users.  We recommend boiling the water for a minimum of 1 minute when used for: 

  • Drinking
  • Cooking (if not boiled)
  • Brushing teeth
  • Washing dishes
  • Washing fruits & vegetables to be eaten raw
  • Making Ice cubes or juice from concentrate


The system includes a 136,000 litre dual chamber concrete reservoir that was hand-poured by volunteers in 1973. The capacity of the tank meets existing water demands in the area.

Distribution system

The system includes 2.1 kilometres of asbestos-concrete and PVC mainlines. Reports suggest that this infrastructure may be nearing the end of its life expectancy.


Existing fire-fighting infrastructure includes three hydrants and one standpipe. The storage capacity of the system, however, is inadequate to provide reliable fire suppression.

Significant issues

The Regional District and the Village of New Denver are currently reviewing the feasibility of amalgamation and the provision of potable water from the Village to Denver Siding. This option was identified as being more cost effective than building a separate water treatment plant for Denver Siding.

For the information of residents, the 2014 water sample results are presented in the table below.

Adverse Water Sample Results in Denver Siding (cfu/100 mL)

     Sample Date Total Coliforms E.coli
  February 12, 2014             4    <1
   April 29, 2014           154    <1
   May 28, 2014            80    <1
  July 16, 2014            17    <1
 August 18, 2014            32    <1
 November 18, 2014            16     <1
  December 5, 2014            1   <1
January 7, 2015             27     4

Plans for future upgrades

In order to proceed with the amalgamation with the New Denver system, the Denver Siding distribution network would need to undergo the following upgrades:

    • determine system demands
    • develop an upgrade plan
    • provide a condition assessment of the existing water system and reservoir
    • revise the long term asset management plan

In 2013, the Regional District completed a Preliminary Design Study containing cost estimates on various options to remove the Boil Water Notice from the water system.

On November 2013, the Regional District hosted an Open House with the Village of New Denver on the water quality upgrades.  Please refer to the following link for the Open House Presentation.

Asset Management Planning

An Asset Management Plan (AMP) is complete and being updated annually.  The 2018 AMP summary report can be viewed HERE

The RDCK has received grant funding under the Federation of Canadian Municipalities (FCM), Municipal Asset Management Program (MAMP) in 2018 to develop a Risk & Criticality Assessment model for the water system's distribution network.  This Risk & Criticality Assessment model is now a component of the AMP and is included when RDCK management considers asset replacement dates or the prioritization of upgrade work on the highest risk/highest need.


This system is currently owned and operated by the RDCK.

The content on this page was last updated April 15 2019 at 2:38 PM