Q1

Why is pipe cleaning necessary? What’s wrong with the existing water supply?

Q2 I’ve never heard of pipe cleaning before. Where else is this being deployed?
Q3 Is this cleaning applicable to all types of pipes?
Q4 What are the different ways to clean pipes?
Q5 What is the working principle of this ultrasonic high-frequency pulsation cleaning?
Q6 What are the benefits of this ultrasonic high-frequency pulsation cleaning?
Q7 What exactly does the pipe system cleaning cover?
Q8 How long does the cleaning process take?
Q9 Will old pipes be affected by this type of high-pressure pulsation thrust?
Q10 Does older pipe system mean more pipe deposits?
Q11 How often should the pipes be cleaned? Should the water color be an indication?
Q12 How do I tell the kind of contaminants present in the water?
Q13 I thought our water supply has been treated for bacteria and filtered? Why are they still present in the building storage tanks and rest of the supply conduits?
Q14 How regular should we clean and service our pipes?
Q15 How can one tell if the pipes are clean?
Q16 Is this a complex process? Will this present any inconvenience to the residents, clients or our neighbors?
Q1:Why is pipe cleaning necessary? What’s wrong with the existing water supply?
 

Absolutely! Years of usage and aging, regardless of pipe material, will cause rusting. Sediments eventually adhere to pipes and form a deposit layer from within. This type of lining will increase the chance of attracting and retaining heavy metals, providing a hot bed for breeding a host of bacteria such as legionella, backwoods coli, fungi and algae. The organic substance, over a longer period of time, may combine with the chlorine added to the water and transform to the carcinogenic trihalomethanes.

Pipes must be serviced and cleaned regularly.

The Hong Kong Water Supplies Department (WSD) recommends that all water storage tanks in the building should be cleaned and sanitized at least once every three months or as often as necessary.
<WSD water supply system maintenance guide – Clause 2.1>

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Q2:I’ve never heard of pipe cleaning before. Where else is this being deployed?
 

Pipe cleaning service has taken root in US, Japan and Europe for more than a decade. This is also gaining momentum in Asia over the past few years – places like South Korea, Taiwan, Shanghai and Guangzhou.

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Q3: Is this cleaning applicable to all types of pipes?
 

Sediment and deposits accumulate in any type of pipe: plastic pipe tends to attract algae and fungi. Hence such water, left attended over a period of time, tends to produce milky, greenish-yellow, blue-green color. Similarly, metal pipe will typically produce brown color from the presence of rust.

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Q4:What are the different ways to clean pipes?
 

There are generally 3 ways to clean pipes: The first type involves the use of solvent agent added to the system to dissolve deposits and sediment lining. Such corrosive natures proves to be damaging to the pipes and is no longer in use commercially.

The second type uses ozone-treated water to kill the germs and other organic matters within the system. Residual amount of this potent substance will cause oral lesion and accelerated oxidation in metal pipe systems. It is advised that only service people to be present at the premise to avoid unnecessary exposure. The pipe system should also be thoroughly cleaned and be rid of any residual ozone-treated water.

The third type has been pioneered by Japanese using ultrasonic high-frequency pulsation. Through the use of carefully controlled amount of water and air, the pressurized water-and-air combination provides thrust to weaken the deposit and clotting, peel them off the pipe while purging them out of your home pipe system. It is also the fastest, safest, most cost-effective and eco-friendly way.

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Q5:What is the working principle of this ultrasonic high-frequency pulsation cleaning?
 

Through the use of pressurized air and water, the microprocessor controls a multi-mode cleaning program, the pressure and pulsation will hammer, scrape, loosen the deposit and clotting, peel them off the pipe and ultimately purge them out of the home pipe system.

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Q6:What are the benefits of this ultrasonic high-frequency pulsation cleaning?
 

This multi-mode cleaning program provides thorough cleaning. It has been proven to be effective and safe for the pipes. It does not involve chemicals or toxic agents, therefore, it is very eco-friendly and safe for you and your family.

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Q7:What exactly does the pipe system cleaning cover?
 

It will include all the pipes that supply fresh water into the kitchens and toilets for drinking, bathing, cooking and so on.

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Q8: How long does the cleaning process take?
 

The entire set up, cleaning and test result will take approximately two to three hours for average flat in Hong Kong. Condominiums would take up to 4 hours. It all depends on the condition, number of tap outlets and pipe routing within the premise.

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Q9:Will old pipes be affected by this type of high-pressure pulsation thrust?
 

We have no damage report from any of the countries in use over the past 10 over years.

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Q10:Does older pipe system mean more pipe deposits?
 

Metal pipes (steel or lead) do get more rusty as time goes by. Plastic or copper pipes perform better with less rust or deposits. Pipes with short length segments or in high-pressure system will relatively fare better because of the increase in water flow. However, microscopic substance may not be visible in the seemingly colorless water. KLEENAQUA will provide guidance for checking and comparing the water quality before and after the pipe cleaning job.

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Q11: How often should the pipes be cleaned? Should the water color be an indication?
 

Cleanliness and quality of you fresh water supply should not only be determined by the color. Metal pipes (steel or lead) do get more rusty as time goes by. Plastic or copper pipes perform better with less rust or deposits. However, microscopic elements such as fungi and algae present in the water may not be visible.

While the Hong Kong Water Supplies Department (WSD) recommends that your building water storage tanks be cleaned and sanitized once every three months or as often as necessary. <WSD water supply system maintenance guide – Clause 2.1> It is advisable to clean your pipe system at least once every year.

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Q12:How do I tell the kind of contaminants present in the water?
 

While not all contaminants are visible to naked eyes, brownish water usually indicates presence of rust, milky water would normally mean presence of fungi sediment, yellowish water indicates a mixture of rust and fungi sediment, bluish-green water indicates presence of algae. Dark color usually means presence of heavy metal, fungi and algae.

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Q13: I thought our water supply has been treated for bacteria and filtered? Why are they still present in the building storage tanks and rest of the supply conduits?
 

It is correct that our water plants treat water for bacteria and filter out impurities. Excessive chlorine addition (to kill bacteria) to our water is actually bad for the human body and may even cause cancer.

After the water treatment, our fresh water travels through the large pipes underneath our main roads. These gigantic pipes are designed for use over 40 plus years. Cracks and leakages are not uncommon. Soil and other contaminants enter the pipe and our water. Water stored in the building storage tanks are subject to the same contamination due to age, cracks, or simply exposure to open air where dust, germs and other airborne impurities like sulfur and carbon gases (from car exhaust) are present.

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Q14:How regular should we clean and service our pipes?
 

We recommend pipe cleaning for home at least once every year. More regular service is required for high-traffic premises such as restaurants and schools.

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Q15:How can one tell if the pipes are clean?
 

There are two simple ways:

For a quick, simple visual check, we can use a white porcelain bowl for a general inspection. Particles in the water should be visible. For a more scientific approach, we have a measurement unit called Turbidity Meter that can measure the transparency and the particles present in the water. We will perform these two tests with every cleaning job.

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Q16:Is this a complex process? Will this present any inconvenience to the residents, clients or our neighbors?
 

We have well-defined processed performed by our skilled personnel. There would not be any noise or interruption to affect your family, residents, clients or neighbors.

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