Month: January 2017

Haida Gwaii Rat Security

This winter there have been reports of increased rat activity within Port Clements and the rest of Haida Gwaii. Parks Canada has provided a power point presentation on how to protect our docks, vessels and wildlife from rats. They’ve also provided a pamphlet on how vessel owners can help contribute to reducing the rat population. Although much of this literature is addressing rat population control around water, there is some educational information on the importance of rat control on Haida Gwaii. Please click on the links below to view the power point and the pamphlets.

Haida Gwaii Rat Security

Water Study

Please review the water study recently undertaken to identify opportunities to improve our water quality in Port Clements

2016 Water Study

Here is some additional information in regards to the use of chlorine in our water system:

Drinking water falls under the Drinking Water Protection Act and the Province has given authority to the Health Authorities (Northern Health Authority for the Village of Port Clements) to administer the drinking water requirements.  Specifically for the Village of Port Clements, our Drinking Water License requires that we maintain a chlorine level throughout our system of 0.2mg/L

To ensure that communities achieve the requirement of providing potable water, chlorine, or chloramine is typically the only option to do so. Other treatment methodologies, such as ozonation or ultraviolet radiation (UV) do not provide the residual effect and require the addition of secondary disinfection to protect the drinking water through the distribution system.

On the operational side specific to Port Clements, chlorine is used both as an oxidant to remove iron and manganese and to act as a primary and secondary disinfectant. If chlorine was to be eliminated, the Village would need to investigate the use of both an alternative primary and secondary disinfectant, and another oxidant for the treatment process. All of these come with their own set of challenges and costs. Further, a detailed review of the treatment process would need to be completed as chlorine is used to increase the removal efficiency of iron and manganese, and to regenerate the Greensand+ as the system was designed to use chlorine to help with the aesthetic challenges in the community.