Monday, May 25, 2015   

Drinking Water Quality

The following information will guide you in maintaining your drinking water quality.

How To Disinfect Your Well

To disinfect your home water system, you must completely spread chlorine throughout the well and plumbing system.

Disinfection can be done by pouring the following amount of non-scented household bleach (5.25% available chlorine) into the well as per the chart below:


Diameter or Size of Well Casing

2 in. 4 in. 6 in. 10 in. 18 in. 20 in. 24 in.

10 ft. 1 ounce bleach 4 ounces bleach 9 ounces bleach 1 quart bleach ½ gallon +
1 pint bleach
3 quarts bleach 1 gallon +
1 pint bleach
50 ft. 5 ounces bleach 1 quart bleach ½ gallon bleach 1 gallon bleach 3 gallons +
1 quart bleach
4 gallons bleach 6 gallons bleach
100 ft. 1 pint bleach ½ gallon bleach 3 quarts bleach 2 gallons bleach 6½ gallons bleach 8 gallons bleach 11½ gallons bleach

While you are disinfecting your well, use bottled water for drinking and cooking.

Follow the steps below to disinfect your well:

  1. Rinse the well casing and any other equipment inside the well with the chlorine.
  2. Turn on all the water faucets in the home until you smell a strong chlorine odor.
  3. Turn the faucets off and let the chlorine stand in the well and plumbing system for at least 24 hours.
  4. Connect a garden house to an outside faucet, and run water away from the house foundation and septic system until the chlorine smell is gone.
    NOTE: Do not pump the highly chlorinated water into a septic system. (Also, do not drain the chlorinated water into a natural water system or sensitive environmental area.)

After the disinfection process has been completed, contact your local health department to have the water sampled. Continue using bottled water or water that has been boiled at a rolling boil for 3 minutes until sampling shows no contamination.

Since boiling water concentrates levels of nitrates in water, young infants and pregnant women should use bottled water instead of boiled tap water for drinking and cooking.

For more information about drinking water, visit the Department Of Environment And Natural Resources (DENR) -- Public Water Supply web pages.

Well Board Of Health Rules

Rules and regulations for installing a well are available in the 1999 Brunswick County Board Of Health Rules for domestic water supply wells.