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We hope that you not only find what you are looking for but maybe even learn a little more while you are here.

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Featured Article

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A blocked drain is one of those problems that seems simple at first… until it keeps coming back. Many homeowners call out a company to clear the blockage, only to face the same issue again weeks later. At ASL Limited, we’ve spent over 50 years solving drainage problems across Surrey, Hampshire, Sussex, and Berkshire...

Blog Articles

An image of a Klargester septic tank
What is Klargester? Klargester is a world leader in manufacturing and supplying premium wastewater management solutions, such as septic tanks. Having been operating for over 60 years, Klargester provides a variety of septic tank and wastewater products that are designed specially to benefit drain and sewer systems...
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This is a cross-section diagram of a cesspool/cesspit created by ASL Limited.
​A cesspit (also known as a cesspool) is a sealed, fully enclosed holding tank that collects and stores sewage from your property when it cannot be connected to the main sewage system. Because of this reason, they have often considered a temporary solution for locations where discharging wastewater would be prohibited...
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An onion shaped septic tank
If septic tanks are always 3/4 full, why do we empty them? The diagram below acceptable levels in septic tanks after one year’s usage. We empty the tank to maintain the optimal functionality that these levels enable. When should you do it, and what's involved if you don't? Saving money by not emptying your septic tank...
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An image of icicles hanging from water pipes in winter.
Frozen pipes are a problem you definitely don’t want to be facing this Christmas. Frozen pipes are a serious problem, causing a significant pressure build-up, resulting in burst pipes and flooding. With so much pressure building – over 2,000 pounds per square inch, the pipe will eventually burst and cause enormous...
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This image shows what you are likely to see once your treatment plant is in place.
Your treatment plant is now installed; the next stage for us is to talk to the house owner (the ‘operator’ of the treatment plant) about maintaining your treatment plant. In our experience, the better you look after your treatment plant, the longer it will last. Therefore, it is important to understand why what we do...
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Sewage treatment plant tank installation.
A treatment plant is an ultimate solution for a private sewage system. If you live in a rural area and are too far from the main public sewer for a connection, then you may need your private sewage system to dispose of your wastewater in an environmentally friendly and legally abiding way. Ideally, your private... ,
A picture of a sink plunger for clearing blockages.
Here at ASL Limited, we receive a lot of questions about drains. Recently we had a phone call from someone with a blocked drain in Reading. They asked how to clean plugholes and prevent blockages. You can use many methods and techniques to clean your plugholes and keep your drains clear of blockages, so we thought we’d...
Unblocking your toilet with a plunger may help.
There are several reasons your toilet may bubble, whether it’s from a build-up of pressure or a blockage in the drainage system. We have outlined the most common reasons why your toilet may be bubbling. Common causes of a bubbling toilet: A blocked drain A build-up of pressure A single pipe facilitating multiple drains...
A photo of rising damp.
Rising damp can be caused by excessive condensation or rain penetration, as well as faulty or blocked drains. Knowing how to spot signs of damp before the problem worsens is essential to avoid structural damage to your property and potentially an expensive repair bill. How to spot rising damp in your home To protect...
A photo of a plumber mending a tap.
The main difference between plumbing and drainage is plumbing is water coming in or that you use in your house, whereas drainage is the water waste flowing away from your house. You may also want to differentiate between plumbing and water mains; explore our water mains page. Water mains involve getting water to your...

ASL Blog Articles Archive

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