Chloramine
A Presentation by Jonn Regan (525-6522)
January 1994

Good evening. I am a spokesperson from a small group of concerned individuais who strongly
oppose the Greater Vancouver Regional District's intention of adding “chloramine” as a
disinfectant in our drinking water. Our goal is to prevent the imposition of chloramine, a toxic

chemical, into our environment.

In 1985, the Region's Medical Health Officers were concerned that our drinking water did not
consistently meet the Guidelines for Canadian Drinking Water Quality. No wonder, since GVRD

insists on authorizing clear-cut logging and road building in our watersheds ...

The GVRD responded with a two-year program which concluded in the development of a multi-
phased Drinking Water Quality Improvement Plan. This plan proposes the following:
1. Enhanced primary disinfection

2. Introduction of secondary disinfection

3. Raw water pH adiustment (less corrosive), and ultimately,

4. Filtration to improve the quality of the water supply.

The reason for introducing secondary disinfection was to prevent bacterial regrowth in the
distribution systern. The distribution system is growing so large that chlorine residual cannot
persist in the pipes because chlorine dissipates rather quickly. The GVRD is looking at two
proposals for secondary disinfection:

Ist: Re-chlorination: the idea would be to build re-chlorination stations along the water

distribution system so as to ensure chorine residuals to the end of the line.

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