My home water is cloudy after the supply was restored. Do I need to clean the water tank?

Yes. Cloudy water after a supply disruption means mud has entered the tank and settled at the bottom. It does not clear on its own. Water tank cleaning removes that sediment before it contaminates your water every day.

How often should I check my water tank?

Check the tap water every month for colour, smell and particles. Check the tank lid every 6 months. Clean the water tank at least once a year, or every 6 months for homes with babies or elderly family members.

My water tank looks clean from the outside. Does it still need cleaning?

The outside of the tank says nothing about the inside. Sediment and algae collect on the floor and inner walls. If it has been more than a year since the last clean, the water tank needs cleaning even if the outside looks fine.

Can TangkiBersih inspect the water tank before cleaning it?

Yes. Send photos of the tank and the tap water by WhatsApp. Our technician assesses them from the pictures and gives a quote within 15 minutes. During the visit, the technician checks the tank's condition before starting work.

5 Signs Your Water Tank Needs Immediate Cleaning

5 Signs Your Water Tank Needs Cleaning Now

A water tank is rarely seen. It sits on the roof and works quietly. That is why most people do not notice the tank is dirty until the tap water changes.

Here are the 5 most common signs. If you notice even one of them, your water tank needs cleaning.

Sign 1: Cloudy or Discoloured Water

Clean water should look clear in a glass. If it is grey, yellowish or brownish, there is sediment in the water tank.

Yellow usually means rust from old pipes. Brown is mud from a supply disruption. Green is algae.

A simple test: fill a glass and leave it for 10 minutes. If sediment settles at the bottom, the tank is dirty.

Sign 2: An Unusual Smell

Water from a clean tank has no smell. A fishy smell, a rotten egg smell or a musty smell means bacteria are multiplying.

The smell is usually strongest in the morning. The water has sat overnight in the pipes leading from the tank.

Many people change their soap or install an air freshener. The real cause is inside the water tank.

Sludge sediment at the bottom of a water tank that has not been cleaned for a long time

Sign 3: Particles, Sand or Debris at the Tap

Fine sand at the bottom of the sink. Black flecks in the bath water. A tap filter that clogs every few weeks.

This means the sediment layer in the water tank is already thick. Every time the water level drops, this sediment gets sucked into the pipes.

Sign 4: Recurring Skin Problems

Itching after a shower. A rash on a child that does not heal. Eczema that keeps getting worse.

Water contaminated with bacteria and algae irritates the skin. If the whole household has skin problems at the same time, check the water tank first.

The full list of risks is at 7 dangers of a dirty water tank.

Sign 5: More Than a Year Since the Last Clean

This is the easiest sign to ignore. The Ministry of Health Malaysia recommends water tank cleaning at least once a year.

If you cannot remember when the tank was last cleaned, the answer is probably never.

Extra Signs Many People Miss

Water pressure drops. Sediment blocks the outlet pipe of the tank.
The water heater fails early. Scale from the sediment builds up on the heating element.
The tank lid is cracked or missing. Dust, leaves and insects get in freely.
Green or black marks around the taps. Algae are flowing out with the water.
The supply has just been restored after a disruption. The first water in carries mud.

Water Tank Signs After the Rainy Season

The monsoon season brings murky water into the supply, especially on the east coast. Every supply disruption that follows carries mud into the water tank. This is the time of year when the signs above appear most often.

If your tap water turns brown after heavy rain, the sediment is already in the tank. It will not clear on its own. Book a clean rather than waiting for it to settle.

Which Water Tank Type Gets Dirty Fastest?

Every tank gets dirty eventually. Some get there faster:

Tanks without a sealed lid: the fastest. Algae within a few weeks.
Tanks filled with well water or hill water: iron and soil sediment. Clean every 3 to 6 months.
Tanks in areas with frequent supply disruptions: every refill brings mud.
Concrete tanks: the rough surface holds algae.
Poly tanks with a sealed lid: the slowest, but still need cleaning once a year.

Areas such as Kelantan with tube wells and Sabah with gravity-fed water need a more frequent schedule.

A Two-Minute Water Tank Check at Home

You do not need to climb onto the roof to check most of these signs. Fill a clear glass from the kitchen tap first thing in the morning. Look at the colour, smell the water and let it stand.

Then look at the tap aerators and the shower head. Sand, black flecks or a green tint point to a dirty water tank. Two minutes is enough to know whether to book a clean.

Why Water Tank Cleaning Fixes All Five Signs

Every sign on this list comes from the same source: sediment and bacteria inside the tank. Proper water tank cleaning removes both. The tank is pumped out, scrubbed, rinsed with a high-pressure jet, sanitised, inspected and refilled.

Filters at the tap only catch what has already left the tank. Cleaning the tank stops the problem where it starts.

What Happens If You Wait?

Sediment gets thicker every month. Bacteria keep multiplying. The cleaning job takes longer and costs more.

A water tank cleaned every year is done within an hour. A tank left for 5 years needs twice the time. The cost goes up with it.

Next Steps

Check your water in a clear glass today.
Smell the tap water in the morning.
Look at the tank lid if you can climb up safely.
If you spot even one sign, schedule water tank cleaning.

TangkiBersih cleans water tanks from RM150. The work is done within 1 to 2 hours. Every job carries a 30-day warranty.

Spotted one of the signs above? WhatsApp TangkiBersih with a photo of your water or your tank. You get a quote within 15 minutes.