How to Troubleshoot Water Tank Cleaning Issues at Home

Quick answer (read this first)

• Verify all main tank valves are fully open.
• Purge airlocks by opening all household taps.
• Flush all lines thoroughly to remove sediment.
• Clean clogged faucet aerators and showerheads.
• Ensure the tank lid is securely sealed.

Safety first

• Always turn off the main power to any water pump before inspection or working near electrical components.
• Never attempt to enter a water tank; this guide focuses on external troubleshooting. Confined spaces are extremely dangerous.
• Wear appropriate personal protective equipment (PPE) like gloves and eye protection when dealing with potential contaminants or using tools.
• Ensure all valves are off before disconnecting any pipes to prevent water damage or flooding.
• If working in damp areas, ensure proper electrical safety and avoid standing in water.

Tools you may need

• Adjustable wrench
• Bucket
• Garden hose
• Flashlight
• Safety glasses
• Gloves
• Old cloth/towel

Step-by-step

Step 1

Verify Main Water Supply and Tank Refill:

Step 2

Ensure the main water supply to your house is fully turned ON.

Step 3

Confirm that your water tank (overhead or underground) has completely refilled to its normal operating level.

Step 4

Check that all primary outlet valves from the tank are fully open. A partially closed valve is a common cause of low pressure.

Step 5

Purge Airlocks from Plumbing Lines:

Step 6

If water flow is weak or intermittent, air trapped in pipes (an airlock) is likely the cause.

Step 7

Open all taps and flush all toilets in your house, starting from the highest floor and working downwards.

Step 8

Allow water to run until it flows consistently and without sputtering, indicating the air has been purged.

Step 9

Flush Sediment from Taps and Fixtures:

Step 10

Fine sediment or debris can be dislodged during tank cleaning.

Step 11

Run all hot and cold water taps for several minutes until the water runs completely clear.

Step 12

Flush toilets multiple times and run showers to clear any sediment from these fixtures.

Step 13

Clean Faucet Aerators and Showerheads:

Step 14

Clogged aerators on faucets and showerheads are frequent culprits for reduced flow.

Step 15

Carefully unscrew faucet aerators and showerhead nozzles.

Step 16

Remove any trapped particles, sediment, or mineral buildup and rinse thoroughly before reattaching.

Step 17

Inspect Tank Outlet and Filters (If Safe):

Step 18

Safety First: Only attempt this if the tank’s outlet is easily and safely accessible from outside the tank. NEVER enter a tank.

Step 19

Look for any visible screens or filters at the tank’s outlet pipe connection.

Step 20

Gently clean any debris or blockage from these external filters.

Step 21

Check Tank Lid and Surroundings:

Step 22

Ensure the water tank lid is securely and properly sealed. A loose lid can allow dust, pests, or debris to enter and contaminate the water.

Step 23

Inspect the area around the tank for any signs of water overflow or unusual dampness.

Step 24

Monitor for Leaks and Unusual Noises:

Step 25

After troubleshooting, carefully inspect the tank, all accessible pipes, and connections for any new leaks.

Step 26

Listen for unusual noises like gurgling, banging, or persistent dripping that could indicate further issues within the plumbing system.

Common mistakes

• Not fully purging air from the pipes after refilling the tank.
• Forgetting to flush all household taps thoroughly to clear out sediment.
• Neglecting to check for blockages in faucet aerators or showerheads.
• Ignoring unusual noises or smells from pipes after tank cleaning.
• Attempting to enter a water tank without proper safety precautions or ventilation.

When to call a professional

• Persistent low water pressure despite following all troubleshooting steps.
• Visible leaks in the water tank itself or main supply lines.
• Water remains discolored, cloudy, or has a strong, persistent odor after extensive flushing.
• You suspect internal tank damage, a faulty water pump, or complex piping issues.
• You are uncomfortable or unable to perform any of the suggested troubleshooting steps safely.