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Canada's role grows amid looming world water shortages in some places, more flooding in others

taminants in waterways."

  • Scientist Pierre Payment of Quebec's Institut National de la Recherche Scientifique, leader of a group of national and international experts developing a novel way to monitor and control the risk of waterborne diseases due to harmful microbes.

    He will describe the possibilities for Quantitative Microbial Risk Assessment (QMRA), a mathematical tool to assess the potential for water treatment facilities, to reach a health target set by Health Canada. The currently proposed target is set at less than 1 infection per 10, 000 people per year.

    The models can be integrated in water treatment facilities as in-line software systems and provide continuous feedback as to the quality of the distributed water. QMRA also allows for sophisticated "what if" scenarios to compare various treatment technologies and chose the best, most cost-effective combinations to reach the health target.

  • US EPA researcher Nicholas J. Ashbolt.

    He says "water conservation could easily reduce demand from households by 70% compared to today's usage in countries like the USA, through innovations available that radically reduce water used to flush toilets, wash clothes and irrigate gardens."

    "The ever expanding demand for urban, water-based sanitation services can be reduced by adopting dry, or low-water-use, devices such as dry composting toilets with urine separation systems. These technologies divert urine for reuse in agriculture and convert the remaining waste on-site into an organic compost that can enrich soil. Operating basically like garden compost heaps, these units employ aerobic microbes to break down human waste into a non-toxic, nutrient-rich substance."

    "These techniques can be used safely, even in fairly dense urban settings, as exemplified by installations at the Gebers Housing Project in a suburb of Stockholm and many other pilot projects."

    Water-saving fixtures installed in U.

  • Contact: Terry Collins
    Canadian Water Network

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