Journal - American Water Works Association | VOL. 60

Foam Swabs for Water Main Cleaning

Publication Date Aug 1, 1968


O since 1964 has the Water Research Association of the United Kingdom been able to investigate in detail the problem of keeping water mains clean. At that time, the association's biologists were seeking ways of limiting the spread of animal infestations in water mains. The food supply was examined as a possible means of control by collecting and studying the debris from water mains flushing operations. As the work such as pyrethrins or chlorine in attempts to control infestations. The deposits lining the pipes would make these relatively ineffective, either by chemical reaction or by providing a safe zone into which the chemicals would not penetrate. The cleaning of water mains thus assumed major importance in WRA work.,,2 WRA, therefore, studied methods of mains cleaning. In considering fire hydrant flushing, particular attention


Water Mains Food Supply Chemical Reaction Foam Swabs Safe Zone Research Association United Kingdom

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