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It is important to sanitize a well twice a year whether it is a new well or an existing well. If the well has been disrupted for service or repair, it must be sanitized. The well storage tank and fixtures should be rinsed with a strong sanitizing solution to kill all harmful pollutants.
Better Water Industries, Inc., of Tyler, Minnesota, puts out a brochure describing the steps to properly sanitize a well.
The company's Sanitizer Pellets and Granules can be used for well, storage tank or cistern sanitation. the amount of tablets and granules used will depend on the amount of water to be sanitized in the system. A 50 ppm chlorine concentration is ideal for sanitizing a well. To produce a 50 ppm chlorine concentration, use one oz. sanitizer pellets or granules for each 100 gallons of water in the system. (1 oz. granules/100 gall. = 35 pellets/100 gal.) IF the water has a high iron or sulfur content, more chlorine may be needed to achieve a 50 ppm chlorine residual.
|Well diameter||Gal of water/100 ft||Oz. of granules to achieve 50 ppm||Number of pellets to achieve 50 ppm|
If you have question about sanitizing wells or the pellets and granules described here, Better Water Industries may be reached at 507-247-5929.
1Note: Chlorine may make the water run colored, and iron deposits, slime and organic material may break loose and plug pump screens; do not continue to run pump if water does not flow. Also, the high level of chlorine required to sanitize a water system is corrosive to most metals and the chlorine solution must not remain in the water system for more than 36 hours before completely flushing from the system.