Set 2

Source Water Protection

Source Water Protection

Drinking water is best protected by taking an approach that uses multiple barriers to prevent contamination from affecting our drinking water. Known as the 'multibarrier approach', it includes taking actions to prevent contamination of sources of our water, using adequate water treatment and distribution systems, water testing and training of water managers.

TDS and pH

TDS and pH

TDS stands for total dissolved solids, and represents the total concentration of dissolved substances in water. The pH value of a water source is a measure of its acidity or alkalinity. The pH level is a measurement of the activity of the hydrogen atom, because the hydrogen activity is a good representation of the acidity or alkalinity of the water.

Treating Rural Water

Treating Rural Water

The most common water treatment tool used in homes on the rural prairie is granular activated carbon (GAC) filtration. This is a treatment technique that functions by removing particles and dissolved organic material (for example: colour), and it should generate water that is better for human consumption.

Ultrafiltration, Nanofiltration and Reverse Osmosis

Ultrafiltration, Nanofiltration and Reverse Osmosis

An ultrafiltration filter has a pore size around 0.01 micron. A microfiltration filter has a pore size around 0.1 micron, so when water undergoes microfiltration, many microorganisms are removed, but viruses remain in the water. Ultrafiltration would remove these larger particles, and may remove some viruses.

Viruses

Viruses

It is hard to believe that a virus particle 100 times smaller than a single bacteria cell (which is more than 10 times smaller than a human cell that is ten times smaller than the diameter of a single human hair) can make you feel so miserable.

Wastewater Treatment

Wastewater Treatment

There are several levels of wastewater treatment; these are primary, secondary and tertiary levels of treatment. Most municipal wastewater treatment facilities use primary and secondary levels of treatment, and some also use tertiary treatments.

Water and Human Health

Water and Human Health

But many people in developing countries, and people living in rural areas of developed countries (including many First Nations communities) do not take safe drinking water for granted. They understand the relationship that exists between safe drinking water and good health, because they have experienced waterborne disease firsthand.

Water Fluoridation in Canada

Water Fluoridation in Canada

Fluoridation of water is supported by many national and international organizations. The World Health Organizations, Centers for Disease Control and Prevention, Health Canada, and multiple dental associations, including the American, Canadian and provincial associations believe water fluoridation helps with dental problems. Health Canada has even declared water fluoridation a public health issue.