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These blog articles are all about drainage and private sewage systems

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A photo of rainwater or 'surface water' guttering and down pipe - but where is it going?
Surface water pushes the sewage through the system to drainage fields and, in the case of treatment plants, potentially to rivers and streams. "Will someone please help me?" We often get calls for help because sewage is flooding out onto someone's drainage field.  In many cases, we explain…
This image shows fat, grease and oil build up in the inspection chamber of a domestic sewage treatment plant.
A domestic sewage treatment plant installation. When you pump raw sewage to a treatment plant, certain processes take place. Process; initial separation of solids from liquids Retention time is; the time it takes for solids to separate from the wastewater and how much is retained in the…
Preparation and Planning to install a new sewage treatment plant.
Before obtaining estimates: Drainage surveys are an essential part of the garden design – before the treatment plant estimating process. You may be able to provide visual diagrams – If you’ve had plans drawn up by an architect within 2 years, they can be very helpful to us. On most occasions, we…
An image of ASL Limited drainage personnel clearing a blocked drain.
The definition of experience: practical contact with and observation of facts or events. an event or occurrence which leaves an impression on someone. encounter or undergo (an event or occurrence). The definition of an experienced drainage specialist:  “A person with training &…
An image of a Klargester septic tank
What is Klargester? Klargester is a world-leader in the manufacturing and supply of 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…
This is a cross-section diagram of a cesspool/cesspit created by ASL Limited.
​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 or…
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. The crust layer or fatty layer is not sinking too low to interfere with…
An image of generic cleaning sprays
Every shower drain becomes blocked at some point, no matter how many preventative measures you put in place. Blocked drains are a common eventuality for many homeowners and more often than not, people want a quick fix. These common household items have been used as drain unblocking products for…
An image of icicles hanging from water pipes in winter.
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,…
This image shows what you are likely to see once your treatment plant is in place.
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…

ASL Blog Articles Archive