How much bleach to add to a well?

To disinfect a well, the general recommendation is to add 1 to 2 quarts of unscented household bleach (5.25-6% sodium hypochlorite) for every 1,000 gallons of water in the well. It's important to first calculate the volume of water in your well and ensure the bleach is evenly distributed. After adding bleach, run water from taps until you smell chlorine, then let it sit for at least 12 hours before flushing the system. Always check local guidelines and consult a professional if unsure.