Cleaning a water tank depends heavily on its size and accessibility. For smaller, easily emptied tanks, a thorough cleaning and disinfection is straightforward. Larger tanks, or those that can't be fully emptied, require different approaches.
Cleaning a Fully Emptyable Water Tank
This method is ideal for smaller tanks, such as those found in RVs or some homes.
- Empty the Tank: Completely drain the water tank.
- Scrub and Rinse: Thoroughly scrub the interior surfaces with a brush and water to remove sediment and debris.
- Disinfect: Disinfect the tank using a solution of 4 parts hot water to 1 part household bleach. Alternatively, chlorine can be used, but follow the manufacturer's instructions carefully. Allow the bleach solution to sit for several hours before thoroughly rinsing with clean water. Note: Other disinfectants, like potassium metabisulphite, are used, but proper testing and precautions are essential to avoid corrosion.
- Dry and Refill: Allow the tank to dry completely before refilling with fresh water.
Cleaning a Partially Full or Inaccessible Water Tank
Cleaning larger tanks that can't be completely drained requires more specialized techniques. These might include:
- Siphoning: Using a siphon to remove as much water as possible before cleaning the accessible portions.
- Submersible Pump: Using a submersible pump to lower the water level enough for cleaning.
- Specialized Cleaning Devices: Consider using a cleaning device designed for in-tank cleaning without complete draining (as seen in various YouTube videos like "cleaning WATER TANK in 10 minutes without removing water"). These often involve specialized brushes or automated systems.
- Chemical Treatment: In some cases, disinfectants can be added to the existing water to sanitize the tank without complete draining, although this method will require careful consideration of water usage and potential chemical residue. A recommended concentration for bleach is 1/4 cup of 6% bleach per 15 gallons of water (this may vary depending on the type of tank and the desired level of disinfection). Always follow the instructions on your chosen disinfectant.
Regular Maintenance: As a general recommendation, water tanks should be cleaned at least once a year. This can vary depending on water quality and tank use, but regular cleaning helps prevent the buildup of sediment, bacteria, and other contaminants, ensuring safe and clean water. Adding a lid to the tank after cleaning can also help maintain cleanliness, especially for attic tanks.
Important Note: Always consult your tank's manufacturer's instructions for specific cleaning and disinfection recommendations. Improper cleaning techniques could damage the tank or leave behind harmful chemicals.
