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Bacteria Explosion In Recovery Wells

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Date: 10/16/2005
Time: 10:14:48 AM
Remote Name: 222.174.100.223

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From: Ian
Date: 9/27/01
Time: 8:35:09 PM
Remote Name: 64.12.101.181

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In Tucson we are experiencing bacteria explosions in newly constructed recovery wells. Wells that have showed the bacteria on well scans are not yet equipped. When they are pumped the bacteria is of no concern to water quality and production is excellent (2400 gpm). However, I have a theory that it is leading to accelerated fouling of the screen as a result of the calcium carbonate precipitated by the bacteria. The infiltrated water is rich in O2 and very cold compared to the natural groundwater. The water is also very hard. Does this theory sound accurate? We are not sure why the wells are fouling. It could be as simple as a pressure change in the well and hard (over 220ppm), saturated conditions.

Last changed: October 16, 2005