Sewage Treatment Plant Installations by expert installers. Free no-obligation quotes.

With the upcoming 2020 legislation changes and continued environmentally focused regulation, Septic Tanks are a thing of the past. Sewage Treatment Plants are the future. Call the expert installers on 0800 3101092 to arrange a FREE quote or Contact us here.  


sewage treatment plant intaller

Why Homeseptic Sewage Treatment Plant Installers? 

We are an intentionally small, professional installation and maintenance company. We operate a maximum of two jobs per week. We do not outsource our jobs. Each of our jobs is led by one of our installation directors, who have a vested interest in the company and have at least 20yrs experience in the drainage sector. This means a director/ expert engineer will be on-site every day leading your job. 

We will not send a salesman. The director who will eventually carry out your job will come to visit at the quote stage. You’ll have a chance to meet them and talk to someone who is an actual expert in the area, rather than someone whose only interest is to sell you what’s best for them. This prevents two things. Firstly, engineers turning up to a job and realising the salesman has sold completely the wrong system or an impossible install that will not work. Secondly, the benefit of having a chance to meet the person who will actually undertake your install prevents the standard formula of a salesman followed by inexperienced, installation teams on minimum wage.

We are a group of friends who grew up together and set up Homeseptic intentionally to be different. We grew tired of the sales led drainage culture where the customer and the quality of work are treated as incidental. We want to come and meet great people and do a great job.

What should you look for when choosing an Installer? 

We are obviously a little bias and would, of course, choose ourselves but here our recommendations.

  • Look to get at least 3 quotes.
  • Insist that you meet the engineer who will undertake the job at quotation stage.
  • Do a little research, our guide to buying a sewage treatment plant is a good start, as well as reading the rest of this page. 
  • Avoid the local farmer and tarmac company, Sewage Treatment Plants need an expert to install them. 
  • Look at the finances of the company who are coming out to visit. Every Ltd company has to file their accounts on Companies House. If their total assets less current liabilities is a negative figure it means they are close to bankruptcy. If their Total net assets are in brackets it means they are also heavily in debt. We do not have an office, we do not have any debt or borrowings and our overheads are minimal. In short, we will be around as long as our body’s let us work. 
  • Ensure that your job will not be outsourced by the company who visit. 
  • Prices may be different, understand why it may be that a cheaper install option has been chosen. This will cost you far more in the future. 

Some Common Questions 

Does a Sewage Treatment Plant need a Soakaway? 

A Sewage Treatment Plant does not need a drainage field in the traditional sense of the word. As part of a septic tank system, the soakaway treated the effluent. With a Sewage Treatment Plant, the effluent is treated within the tank. A location to discharge is still required and this needs to comply with Building Control Regulations. Commonly an outlet to a drainage ditch or storm drain is used or a series of drainage tunnels in the ground, akin to a traditional soakaway. 

How much does it cost to install a Sewage Treatment Plant? 

This depends on several factors. The main factors are the size and type of tank required, the type of discharge available and ground conditions. For a 4 bed house with a drainage ditch available and no adverse ground conditions, you are looking at between £8k and £10k for a basic tank system. 

Is planning permission required for a Sewage Treatment Plant? 

If you are building a new house then yes. If you have a septic tank already then Building Control sign off will be sufficient, unless you are looking to change discharge point significantly. If you live in an area of AONB or national park then special permissions may be needed. 

We will advise you of any specific requirements at the quote stage. 

Sewage Treatment Plant Installers


The Sewage Treatment Plant Installation journey with Homeseptic.


What are the key features of our install service?

We offer a quick easy and professional installation service with all the key features and guarantees you would expect at market leading prices:

  • You get in contact and arrange a FREE quotation.
  • We visit, discuss the options available to you and carry out a site assessment. At this point, you may require a percolation test, we will discuss this option if necessary with you as there will be a cost associated. 
  • We send you our FREE quotation.
  • If you would like to proceed with the work we carry out a full survey of your property and perform a percolation test to ensure our preferred solution is viable.
  • We arrange an Installation date
  • The installation starts, we normally book in a full week for the job.
  • On the first day of the installation, the lead engineer (who you will have already met) will take you through the planned schedule of works. Generally, you will need to be available on Friday for sign off. 

As part of the Installation we will:

  • Firstly install and configure a first-class sewage treatment system that complies with the general binding rules.
  • We Liaise with the environment agency, local council building control on your behalf to register your new system and facilitate a permit if it is required.
  • Arrange a building inspector for final approval and issue of a building regulations certificate.
  • Supply you with all relevant manufacturer’s instructions, warranties and a maintenance schedule for the upkeep of the tank.
  • Offer our optional servicing and maintenance contract.
  • Provide you with a 2- year guarantee on our groundwork.
  • Issue you with a certificate of completion for the installation and a part P electrical connection certificate.

What our customers have said about us

    review rating 5  Really pleased with the whole experience with Homeseptic and the team. Working with Andy at the quotation stage, which was very competitive and Dave & James on site, who where very courteous and knowledgeable and worked with us at every stage of the installation. Weather was not great so thanks to James who gave up his Sunday to work on site to catch up. The area was left tidy and fences reinstated. We are now the proud owners of a state-of-the-art sewage treatment plant. I cannot recommend Homeseptic enough and anyone considering a sewage treatment plant or similar should absolutely give them a call.

    thumb Mark T

    review rating 5  We had some serious problems with out Septic Tank these Dave and the team came out and got everything sorted in really quick time. Dave explained all of the issues and fixes with and us and was a pleasure to meet as was the whole team. If you have any issues with your Spetic tank get in touch with these guys.

    thumb Simon Fox

    review rating 5  Great service from these guys and they did a brilliant job with the drains! They even left my garden looking how it looked before 🙂 would really recommend them.

    thumb Reena Parmar

What type of sewage treatment plant do I need?

The type of sewage treatment plant needed for your property depends on a number of variables.

Firstly the size of the property and how many occupants, essentially how much effluent needs treating. Trying to economise by using a smaller tank can lead to extra costs from a failing system due to overloading.

Soil type and absorption rate are very important factors that must be taken into account. We can advise on this and will do a percolation test before we install a system. This will tell us the soil absorption rate which we use to determine how large the soakaway must be. We also need to consider the water table as this can have a massive impact on any installation. 

The cost will also be a consideration for most.

We try to offer, conditions dependent, a Bronze, Silver and Gold tank option on the tank type. As you would expect the Gold option is the most expensive and will have several features that make it so. The Bronze will be completely capable of carrying out the job and meeting all regulatory commitments.  Essentially the recommended Sewerage treatment plants will vary as will installation costs.

At Homeseptic we manage the process of choice, making your decisions as simple as possible. Our expert advisers will visit prospective customers to explain what is appropriate, legal and suitable for you and the property’s ground conditions. This is at no additional cost or obligation to yourself.

We always recommend the best system for the task and your individual circumstances. We endeavor to also offer you a number of options covering the complete range of sewerage treatment plants. All types and cost variants will be explained giving you exactly what you need to make the right choice.

Please see our choosing a tank guide


Why do I need a Sewage Treatment Plant?

In many cases, it is not feasible to connect properties to the main public sewer system. If this is the case then your property will have to have its own mini drainage system. These work by collecting, separating and processing the waste that leaves your property. The two most common domestic drainage systems are septic tanks and sewerage treatment plants.

A sewerage treatment plant is a packaged system that processes the waste from a property by a range of methods. Primarily aerobic digestion which results in separated and treated solids and liquids. The effluent emitted is essentially water, the quality will depend on your system. The liquids are safely discharged to the nearby environment via a nearby watercourse, ditch or an underground soakaway. A soakaway simply collects and disperses the water which is then absorbed into the ground. 

Septic tanks are simpler systems, not having the capability to treat waste in the way a treatment plant does. The liquid from septic tanks is also discharged via a watercourse, ditch or soakaway.

This effluent discharged, however, is not safe for the environment. The tank does not treat the sewage. It is for this reason that there are the new 2020 sewerage regulations. The main feature of this regulation is that you will no longer be able to discharge to a ditch or watercourse.  If you have an existing Septic Tank it will also affect your ability to sell your house. 

We can help you to meet these new regulations so call on 0800 3101092 or email us today.


Kingspan Sewage Treatment plant how it works

Graf One 2 Clean

How a Graf Tank works

At Homeseptic we love a Graf tank, while in some cases they are a little more expensive the customer service and quality is top notch.

How does a Sewage Treatment Plant work? 

There are generally three main operations taking place within a domestic Sewage Treatment Plant. The number of stages and their exact function varies depending on the type and brand of domestic Sewage Treatment Plant. Please see our Sewage Treatment Plant buying guide for more details.

Settling and Separation

The settling chamber is the first stage in the purification process. In this stage in a similar way to a Septic Tank, the solids are separated using gravity. Gravity pulls the heavier solids and sludge to the bottom of the tank chamber. This removes the majority of the main pollutants. The leftover liquid less the heavier elements are then passed to the purification chamber. Some Sewage Treatment Plants combine this first stage and the purification in a single process using a sequence batch reactor.

Aeration/Purification phase

In the second phase, oxygen is injected into the tank stimulating bacteria growth and development, promoting aerobic digestion. The oxygen is normally injected using a compressor within the Sewage Treatment Plant which is super efficient using little electricity. This is one of the reasons that a Sewage Treatment Plant normally requires an electric connection.

 Final Separation

Once the purification phase is completed, which is normally managed by an internal management system. The treated waste flows into a separate section where gravity again separates out any residual waste. The previous wastewater is now purified to appropriate environmental standards, see below. As we have mentioned the quality of the discharge is dependent on the tank you choose

 Please see the relevant governmental guidance:

Discharge to Surface Water

Discharge to the Ground

New Forest Philosophy

Homeseptic is based in the New Forest in between the cities of Southampton, Salisbury and Bournemouth. We are a group of friends who grew up together in the area and grew tired of the way other Drainage firms are run.

As a result, we want to actually put the customer first and turn up to do a good job we can be proud of. Unfortunately, this is not the case in the market, with most companies pressuring their workers to sell unnecessary works on a visit. Because of this, we pride ourselves on being honest hard working professionals, which we hope you will agree with.

As a result, we will not turn up in flash sales vehicles and give you a load of chat and then do a terrible job. Our aim is to come with the job in mind and to give you the best value we can in order to facilitate a quality installation. 

We cover all of Hampshire, West Sussex, Dorset, Somerset and Wiltshire. Please get in touch and see what you think.

Call Homeseptic