chlorination
1.     Set your water conditioner on bypass, if you have a reverse osmosis system shut off the water inlet valve.
Switch off the electric breaker or disconnect that powers the well.
2.     Remove the cap from the top of well (three or four screws around the top should release the cap.
3.     We recommend two gallons of household unscented bleach for most chlorinations. Pour the bleach into the annular space between the support bar and well casing ( see figure 1 & 2). If there is a small ¼" size plastic tube in the annular space near the top of the well do not pour in the bleach, contact Suburban Installers for assistance. Do not pour chlorine into the center hole & try to keep the bleach off the wire connections.
4.      Turn the power back on to the well.
5.     Hook a garden hose up to an outside faucet with enough hose to reach the wellhead. Turn the faucet on wide open and run water into the annular space of the well where you poured the bleach. Run for 15 minutes, if the well fills up and water runs over the top your well has a drawdown seal and you need to contact Suburban Installers for assistance. If the well hasn't filled up check the hose to see if you can smell chlorinated water. If chlorine is present you are ready to complete the chlorination process.
6.     Turn on each individual faucet inside & outside the house on until you smell chlorine then shut them off to keep the chlorinated water in the plumbing lines.
7.    Reinstall the well cap securely on the well. Let the water in the plumbing lines sit for a minimum of 12 hrs. Do not drink, bathe, wash clothes, or cook with the chlorinated water. It is harmful if consumed, and can burn the skin if contacted, & damage clothing.
8.     After 12 hours hook  hoses to outside faucets if possible and run the chlorinated water to waste until no chlorine smell is present.
9.     Turn off the outside faucets and run each individual faucet in the house until no chlorine is present.
10.     You can now take the water conditioner off bypass and turn the water back on to the Reverse osmosis unit. The water should now be ready for normal use.
11.     Call and schedule a water test if needed.
How to Chlorinate a Well