Are you looking for a team with a proven track record handling septic tank and sewage treatment plant installation in Dorset? Then look no further than Drainline for first-class septic tank and sewage treatment plant services. Whatever your needs, you can trust that our team will work with you from the get-go, ensuring that these needs are met. 

As a privately owned, non-franchise, family-run business, we deliver friendly service with a personal touch. We’re backed by more than 15 years of experience installing septic tanks and sewage treatment plants. Our services are competitively priced and carried out by a team of professionals. All our work is guaranteed, and we assure you of a one-hour fast response for any emergency calls. 

Our business is Checkatrade approved, so you can derive complete peace of mind that we’re the right team to call for septic tank and sewage treatment plant installation. Call us on 0333 200 4747 to find out more. 

Sewage Treatment Plant Installation Specialists 

When it comes to septic tanks and sewage treatment plants, you mustn’t underestimate just how important these systems are to your property. Water flows from the property as wastewater, and if this water isn’t collected and disposed of correctly, it can have unpleasant consequences. 

Here at Drainline, we provide the best septic tank and sewage treatment plant services in Dorset. You can read all about this below. 

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About Drainline Services  

Drainline is a privately owned, non-franchise, family-run company that was founded more than 15 years ago. We operate across a large coverage area, including Dorset, Hampshire, Wiltshire, Surrey, and Berkshire. Our engineers are equipped to deal with a range of drainage requests, including the installation of septic tanks and sewage treatment plants. 

We pride ourselves on being a smart, friendly, and professional team and delivering affordable services backed by cutting-edge equipment and technologies. 

What is a Sewage Treatment Plant?  

You’ve likely heard of septic tanks and sewage treatment plants, and it’s worth noting that the two aren’t the same. A sewage treatment plant, Dorset customers, is a piece of equipment that’s attached to a drainage system. Water that contains sewage waste (wastewater) enters the plant where it’s broken down and treated. The treated water is then jettisoned down the drains. 

Septic tanks, on the other hand, merely separate the waste from the water. As such, the water that leaves a septic tank is less clean than the water that leaves a sewage treatment plant. 

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How Does a Sewage Treatment Plant Work?  

While septic tanks just separate solid and liquid waste, sewage treatment plants go a step further. The wastewater is treated, and mechanisms within the plant break down the solid matter, leaving behind a cleaner, more eco-friendly effluent. The resulting effluent enters a biozone chamber where a pump airs the waste.  

This encourages the growth of friendly bacteria that condense organic matter, breaking down and purifying the result. Once the final waste leaves the chamber, it’s around 95% clean and safe enough to be drained away using conventional methods. 

Sewage Treatment Plant Installation Services in Dorset  

Here at Drainline, we specialise in installing septic tanks and sewage treatment plants. If you’d like to have either fitted on your Dorset property, just give us a call. We’ll take care of all the necessary calculations to design a system that will sufficiently purify the water expelled as waste

Sewage Treatment Plant Maintenance and Repair  

But what if my septic tank or sewage treatment plant is acting up or has failed entirely? What if it’s been a while since it’s had any upkeep?  

Then you’ll be pleased to hear that we also maintain and repair septic tanks and sewage treatment plants. If you’ve encountered a problem, let us know, as we can boast a one-hour rapid response time. 

Alternatively, if you’d like to request a maintenance visit, we’d be happy to discuss this with you. 

Other Services We Offer  

When it comes to drainage services, we do a lot more than just install, maintain, and repair septic tanks and sewage treatment plants. We at Drainline also provide Dorset customers with a wide range of additional services, including: 

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Drain Repairs

If you’ve noticed standing or slow-draining water, unpleasant odours, and strange gurgling sounds, this could be a sign that your drain is blocked. A blockage can be caused by damage to the drain, meaning unblocking the drain won’t be enough. Fortunately, our Dorset team has the means to restore your drainage system to full working order in no time. 

Drain Relining

While largescale drain repairs might involve excavating the area, for minor repairs, it can be as simple as installing a new drain lining. Drain relining involves inserting a liner that’s coated in resin. This liner is then inflated and heated, curing the resin. The liner is then removed, leaving behind a brand-new pipe wall. 

CCTV Drain Surveys

Before any work can proceed, we must first ascertain where the blockage is, how serious it is, and what’s causing it. Traditionally, this would involve digging up the pipe – a lengthy and costly process. Nowadays, the process is simpler; we just insert a CCTV fibre optic camera into the pipework, which then relays images to a monitor. 

These images can then be supplied to the customer along with a report of our findings and recommended solution. 

Drain Unblocking 

If your drains have become blocked, this can be due to a whole host of reasons, from food debris and FOGs (fats, oils, and greases) to hair, sanitary products, branches, leaves, and litter. Here at Drainline, we have the means to unblock drains no matter how badly blocked they are. We utilise two methods – drain rodding and drain jetting. 

Drain rodding involves using rods to slice and pull at the blockage, deconstructing it so that it can be easily removed. Drain jetting involves using high-pressure water to blast away a blockage. 


Soakaways are designed to improve the efficiency of a drainage system, much like septic tanks and sewage treatment plants. They also help to reduce the likelihood of flooding, making them useful in flood-prone areas. They work by assisting excess fluid in exiting the drainage system as fast as possible. At Drainline, we can install, maintain, and repair soakaway systems. 

Drainage Fields 

Drainage fields are in the same category as soakaway systems. They are designed to maintain the efficiency of the flow of effluent from your property. If you require a drainage field to be installed or need your existing one repaired or maintained, just give us a call. 

High-Pressure Jetting 

Even with a septic tank or sewage treatment plant installed, drains can still become blocked, given the myriad causes. High-pressure jetting is an efficient method in which water is fired at pressures high enough to dislodge even the most stubborn blockage. We have domestic and even commercial systems that can reach several thousand PSI. 

An upside of drain jetting is that it’s eco-friendly, as no chemicals are needed. Plus, it cleans the pipe walls too, removing any deposits and cleansing the pipe of any odours. 

Pitch Fibre  

Pitch fibre drains were once considered to be a revolutionary alternative to more expensive drain options of the time. However, the material has one weakness – it distorts, warps, and collapses when constantly exposed to water. And if exposed to wastewater, the situation becomes exacerbated. As such, many properties are faced with drainage problems caused by collapsed pitch fibre drains. 

Fortunately, our team are experts at repairing and replacing pitch fibre drains. To find out more, just give us a call. 


See what our other customers have said about us by clicking on our testimonials page. These kind words should convince you that we’re the best choice for septic tank and sewage treatment plant installation in Dorset. 

What Areas Do We Cover

In addition to Dorset, Drainline also covers other areas, including: 

  • Hampshire 
  • Surrey 
  • Wiltshire 
  • Berkshire 
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Why Choose us for your Sewage Treatment Plant Installation Dorset Residents?  

Drainline is a privately-owned, family-run, non-franchise business that’s been around for more than 15 years. We boast a friendly, knowledgeable team who are trained and certified to tackle any issue with your septic tank or sewage treatment plant. They can also install septic tanks and sewage treatment plants that are both modern and efficient. 

We’re a Checkatrade approved business, so you can take comfort knowing that we meet the highest industry standards for our work and prices. If you’d like to learn more about what we do, the best way is to give us a call today. 

Contact Us Today

If you’re looking for a company that specialises in sewage treatment plant installation and the installation of septic tanks, look no further than Drainline. Our wealth of experience and second-to-none expertise make us the obvious choice for drainage services in Dorset. If your current system is no longer up to snuff, we’ll install a modern replacement that’s efficient and long-lasting. 

If you’d like to discuss our septic tank or sewage treatment plant installation services, just give the team at Drainline a call today at 0333 200 4747 to get started. We’ll be happy to answer any questions you might have or discuss any request you wish to present us with. Alternatively, if you’d like to get in touch using a written method, feel free to do so. 

You can get in touch by filling out the online contact form on our website, and we’ll be in touch as soon as possible.