Keeping a water storage tank clean is crucial for maintaining a safe and potable water supply. Regularly disinfecting the tank with chlorine bleach is a simple and effective method.
Here's how to clean a water storage tank using chlorine bleach:
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Determine the Tank's Volume: Knowing the exact gallon capacity of your water storage tank is essential for proper bleach concentration.
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Prepare the Bleach Solution:
- In a clean quart container, add about half full of water.
- Add 1 to 1 1/2 fluid ounces (2-3 tablespoons) of standard, unscented, non-detergent household chlorine bleach (5.25% concentration) for every 500 gallons of water the tank holds. It's crucial to use bleach without added detergents or fragrances.
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Introduce the Bleach Solution:
- Pour the bleach solution directly into the water storage tank.
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Circulate the Water:
- If possible, circulate the water within the tank to ensure the bleach is evenly distributed. This can be done by turning on a pump if one is connected or by other means of agitation.
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Let it Sit:
- Allow the chlorinated water to sit in the tank for a minimum of 12 hours, or preferably 24 hours. During this time, avoid using the water.
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Flush the Tank:
- After the waiting period, thoroughly flush the tank with fresh water until the chlorine odor is gone. This might require multiple flushes.
Important Considerations:
- Bleach Concentration: Ensure you are using a 5.25% concentration of chlorine bleach. Different concentrations require adjusted measurements.
- Safety: Handle bleach with care, avoiding contact with skin and eyes.
- Regular Maintenance: Regularly inspect and clean your water storage tank (at least annually) to prevent the buildup of sediment and contaminants.
- Alternative Disinfectants: While chlorine bleach is a common method, other disinfection methods may be available or required depending on the specific source of your water and local regulations. Consult with a water treatment professional.
- Tank Material: The type of material your water storage tank is made from can also affect how and how often it needs cleaning. Always check the manufacturer's recommendations.
By following these steps, you can effectively keep your water storage tank clean and ensure a safer water supply.
