Which step is part of disinfecting the well after adverse results?

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Multiple Choice

Which step is part of disinfecting the well after adverse results?

Disinfecting a well after adverse results relies on shock chlorination to kill bacteria throughout the well and the immediate distribution system. The correct approach is to add bleach to reach about 200 ppm free chlorine, circulate by running taps until chlorine odor is detected everywhere, then keep the taps closed for 24 hours to allow adequate contact time, and finally flush the system until the odor is gone. This sequence ensures the disinfectant reaches all parts of the well and piping and then is removed so the water is safe to use. Boiling water, while useful for drinking water safety, does not disinfect the well itself. Increasing water intake does not address contamination, and installing a new well is an extreme measure not part of the disinfection process.

Disinfecting a well after adverse results relies on shock chlorination to kill bacteria throughout the well and the immediate distribution system. The correct approach is to add bleach to reach about 200 ppm free chlorine, circulate by running taps until chlorine odor is detected everywhere, then keep the taps closed for 24 hours to allow adequate contact time, and finally flush the system until the odor is gone. This sequence ensures the disinfectant reaches all parts of the well and piping and then is removed so the water is safe to use. Boiling water, while useful for drinking water safety, does not disinfect the well itself. Increasing water intake does not address contamination, and installing a new well is an extreme measure not part of the disinfection process.

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