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Initial concepts for a non-electrical technique for the regulation of alum addition in a water treatment plant were tested. A riser pipe was fabricated with holes to mimic a sutro weir was added to the entrance tank of a water treatment plant. The entrance tank and riser pipe were evaluated on their ability to provide a linear correlation between water height in the tank and the flow rate. The flow rate was shown to be ????? linearly related to water height with the riser pipe implementation. This will allow creation of an alum flow control module regulated by a float system in the entrance tank. The experiment shows a significant achievement in the movement to bring clean water to communities without access to electricity.
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