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A bi-monthly magazine covering the environmental protection and drinking water industry since 1988

September 2001 Edition Does our drinking water need a "Marshall Plan" to restore crumbling infrastructure? It is alarmingly apparent that our water and wastewater infrastructure is in such bad shape that human health is increasingly at risk. Canadians are still wrestling with the Walkerton E. coli 0157:H7 drinking water tragedy in Ontario, as well as the North Battleford Cryptosporidium outbreak in Saskatchewan. Few seem aware that the Americans have had major E. coli and Cryptosporidium outbreaks in their drinking water. In 1993, 400,000 people became sick, 4,000 were hospitalized, and 50 deaths were attributed to Cryptosporidiosis from contaminated drinking water in Milwaukee. There has also been a lethal Cryptosporidium outbreak in Oxford, England in recent years. See Tom's full commentary Also in this issue: New process for removing hydrogen sulphide from sour gas Washington hosts 15,000 at AWWA Conference Land application of sewage biosolids for crop production Wastewater plant uses ultrasonic detection and digital radio technology Screw presses for sludge dewatering at recycling facilities Citizens and Mohawks oppose expansion of a garbage dump in Greater Napanee Aquifer storage recovery is a key component in sustainability Environmental management technologies transform US army ammunition plant State-of-the-art wastewater facility for Strathmore, Alberta designed in BC Road salt pickling Toronto rivers Some environmental facts of life revealed Industry Update

Rehabilitating the Walkerton drinking water distribution system The objectives of this high profile project in Walkerton, Ontario, were to examine possible sources of contamination of the municipal wells and the distribution system, to ensure all sources of contamination were eliminated and to ensure that Campylobacter jejuni and Escherichia coli O157:H7 were removed from both the wells and the distribution system. It was known that three drilled wells provided water for the town. Well #5 is 15 metres deep in limestone bedrock and has a capacity to supply 1,771 m3/day. Shortly after the investigation began, Well #5 was considered to have been the major source of contamination of the distribution system. Click here to see the full article. Equipment Specifiers' Guide Spotlight On: Meters Comments? send them to the editor.

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