Drinking Water Services FAQ

Why are changes being made to my water system?

Many of BC’s water systems are in need of infrastructure upgrades and/or replacement. The changes planned for many RDCK water systems are intended to correct the problems that are related to age and years of use.

Why are there sometimes contaminants in my drinking water?

Many water systems in BC draw their drinking water straight from surface sources. Many micro-biological contaminants occur naturally and are part of a functioning ecosystem. Other contaminants are the result of metals leaching from the ground or from the introduction of fecal matter from livestock or wildlife.

Who is most at risk from drinking water contamination?

Everyone is at risk from water contamination. However, the very young, the very old, and people with suppressed immune systems are most at risk of becoming ill. 

What are the benefits and drawbacks of using chlorine to treat my drinking water?

When using chlorine as the sole treatment method, high doses of chlorine are required for extended periods of contact time. The amount of chlorine required and the time required depends on the temperature and chemistry of the water. If organics are present in the source water and chlorine is used as a treatment method, the chlorine can react with the organics and produce byproducts that create odour and taste problems.

Modern drinking water treatment processes, like those used at many RDCK facilities, use filtration to remove the organics and micro-organisms followed by ultra violet light to kill any harmful micro-organisms that may have passed through the filtration process. Once all the organics have been removed from the water, a very small amount of chlorine is added to maintain the quality of the water as it travels through pipes to your tap. Chlorine in this concentration does not produce odour problems, taste problems or, without any organics for the chlorine to react with, harmful byproducts.

For more information on the benefits and drawbacks of chlorine, please see Health Canada's website on drinking water chlorination.

How can I remove chlorine from my drinking water?

Chlorine can be easily removed from drinking water using a simple carbon filter (e.g. Brita filters) or by letting water stand overnight in a clean, covered jug.

Can I acquire immunity to the micro-organisms in drinking water?

Immunity is not possible. However, the symptoms of gastro-intestinal illness (e.g. stomach cramps, bloating, gas, diarrhea, etc.) may be reduced with long-term exposure. This desensitization does not fully protect the individual from large and sudden doses of contaminants.

Why is my water system on a Boil Water Notice?

Interior Health issues a Boil Water Notice when a water system's test results indicate the presence of certain micro-organisms (i.e., coliforms) or pathogens (i.e., E. coli).

When can I expect the Boil Water Notice on my water system to be lifted?

Only Interior Health can lift or issue a Boil Water Notice. In general, a water system will have to produce a consistent serier of water samples that show 0 micro-organisms.