Alabama Flooded Wells: Preparation and Shock Chlorination per Alabama Extension

Alabama Cooperative Extension System page "Flooded Wells: Shock Chlorination", adapted for Alabama from other state agency and extension protocols. Author and date are not stated. Only stated points are included; bleach quantities are left to the page's own table.

Key points from the page

A licensed water well driller is strongly recommended to shock chlorinate a well whose wellhead was flooded or submerged, even temporarily.
Reduced water pressure when water is turned on can indicate a damaged well system; the disinfection steps then will not work and a certified contractor should examine the system.
Before a flood: fill the pressure tank as much as possible; cover and secure exposed well components; turn off electricity to the well; keep the well log, driller contacts, and chlorination supplies ready.
Procedure outline: run muddy water through a hose until clear; shut off the pump circuit breaker and bypass softeners or filters; open the well; pour the bleach solution in; restore power and recirculate water for 30 minutes; run each tap until bleach is smelled and leave it at least 8 hours; flush until the smell is gone, away from septic systems, landscaping and water bodies; disinfect and reconnect softeners or filters per manufacturer instructions.
"DO NOT DRINK THE WATER UNTIL IT HAS BEEN TESTED."
Contaminated water should not be used for drinking, cooking, ice, bathing, or washing clothes or dishes; alternatives named include bottled water or water boiled for at least 5 minutes.

Not verified: bleach amounts per well depth and diameter (see the page's Table 1, not reproduced here).

General information only. Not health, plumbing, legal or code advice. Follow the original page and your county health department.