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Spring Cleaning: How to Clean Your Water Storage Tanks

Spring is a time for renewal and fresh starts, making it the perfect opportunity to ensure that your water storage tanks are in pristine condition.
Spring Cleaning: How to Clean Your Water Storage Tanks

Whether you use your tanks for rainwater harvesting, potable water, or irrigation, regular cleaning is essential to maintain water quality and extend the lifespan of your tanks. At Canwest Tanks & Ecological Systems, we understand the importance of maintaining clean water storage solutions. Here’s a comprehensive guide on how to effectively clean your water storage tanks this spring.

Why Regular Tank Cleaning is Crucial

Over time, water storage tanks can accumulate sediment, algae, bacteria, and other contaminants. Regular cleaning helps to:

  • Ensure Water Quality: Clean tanks reduce the risk of contamination, ensuring safe and clean water for your needs.
  • Prevent Algae Growth: Algae can thrive in stagnant water, particularly in warmer months. Cleaning helps prevent this growth.
  • Extend Tank Lifespan: Removing debris and contaminants can prevent corrosion and damage to the tank.
  • Maintain System Efficiency: Clean tanks ensure that pumps and filtration systems work effectively, reducing maintenance costs.

Step-by-Step Guide to Cleaning Your Water Storage Tanks

  1. Preparation
  • Safety First: Wear appropriate safety gear, including gloves, goggles, and a mask, to protect yourself from potential contaminants.
  • Drain the Tank: Completely drain the tank. Use the water for irrigation or other non-potable purposes if possible to avoid wastage.
  • Inspect the Tank: Check for any signs of damage, rust, or leaks. Repair any issues before cleaning to prevent further problems.
  1. Cleaning Process
  • Remove Sediment: Use a wet/dry vacuum to remove sediment and debris from the bottom of the tank. This helps to eliminate the buildup that can harbor bacteria and algae.
  • Scrub the Interior: Using a long-handled brush with stiff bristles, scrub the interior walls and floor of the tank. For stubborn stains, a mixture of water and mild detergent can be used.
    • Disinfect the Tank: Prepare a disinfecting solution. For potable water tanks, use a solution of household bleach (unscented) and water (1 part bleach to 100 parts water). Ensure the tank is well-ventilated during this process.
    • Rinse Thoroughly: After scrubbing and disinfecting, thoroughly rinse the tank with clean water to remove any remaining detergent or bleach solution.
  1. Post-Cleaning Care
  • Refill the Tank: Once the tank is clean and dry, refill it with fresh water. If the tank is used for potable water, consider testing the water quality before use.
  • Monitor Water Quality: Regularly test the water quality to ensure it remains clean and safe. This is particularly important for potable water systems.
  • Regular Maintenance: Implement a routine maintenance schedule to keep your tanks clean. Depending on the usage and environmental conditions, tanks should be cleaned at least once a year.

Tips for Preventing Future Contamination

  • Install Filters: Use high-quality filters on inlets to prevent debris from entering the tank.
  • Use a Tank Cover: Ensure your tank is covered to minimize exposure to sunlight, which can promote algae growth.
  • Inspect Regularly: Regularly inspect your tank and surrounding area for potential sources of contamination, such as bird droppings or plant debris.
  • Consider Professional Cleaning: For large or complex systems, professional cleaning services can ensure thorough and effective maintenance.


Spring cleaning your water storage tanks is an essential part of maintaining a safe and efficient water system. By following these steps, you can ensure your tanks are in top condition, providing clean water for all your needs. At Canwest Tanks & Ecological Systems, we are committed to helping you achieve optimal tank performance and water quality. For more information on our products and services, feel free to contact us today.

Embrace the season of renewal and give your water storage tanks the care they deserve this spring!