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Buying a house with a septic tank

Choosing a Sewage Treatment of Septic Tank installer

A guide for those looking to INstall a new Septic Tank or Sewage Treatment Plant. Please call us on 0800 3101092 for a free visit and quote, or via our contact form.


How to Choose the best installer for your project

Having a new Septic Tank or Sewage Treatment Plant installed is a costly exercise. We have put this guide together to help you avoid the cowboys, untrustworthy companies and the dreaded salesman.

Obviously we carry out installations. We think we are the best but maybe you won’t. That’s fine. Hopefully, you will give us a chance to visit and quote. If you do not that is fine, we hope you find the below useful.

Get a working knowledge of the sector:

Firstly you need to have a working knowledge of the associated regulation. On the 1st of January 2015, the General Binding Rules for small sewage discharges came into law. If your system does not adhere to the General Binding Rules and you do not have a Permit the discharge is illegal.

 It is illegal to discharge effluent to either ground or surface without a Permit issued by the Environment Agency or by adhering to the General Binding Rules.

Please read our General Binding Rule Guide before starting.

Get an understanding of the different types of systems

The effluent almost exclusively flows into an underground tank of varying size and construction. The three main types of the tank are a Cesspit, Septic Tank and Sewage Treatment Plant.


 A Cesspit has no outflow it is a tank that simply collects your effluent. These types of tanks require regular emptying. Please see out Cesspit guide.

Septic Tank:

A Septic Tank is a tank that has a dividing wall. The wall allows liquid effluent to pass through but stops the solids. The liquid effluent then passes into a drainage field where it is treated or into surface water. From the 1st of January 2020 a septic tank can no longer discharge to Surface Water the discharge will become illegal. 

Treatment only occurs if the drainage field is constructed properly. It is the owner’s responsibility to ensure that the drainage field is constructed and is working in line with the General Binding Rules. My estimate is that 90% of Septic Tank owners discharging to the ground do not have a compliant Drainage Field.

Per the General Binding Rules, any non-compliant Drainage Filed needed to be upgraded as of the 1st of January 2015. If you discharge to ground you have to have your tank emptied annually and keep the evidence of this. Failure to comply again means you have an illegal discharge. Please see our Septic tank page for more detailed information.

A Sewage Treatment Plant is also known as a wastewater system or packaged treatment plant:

A Sewage Treatment Plant is a tank that treats the effluent internally and discharges effluent to a certain standard of cleanliness. The Standards are clearly set and all tanks must adhere to them. This means as well as an annual empty you have to also have your tank serviced and the effluent quality checked.  Please our guide to buying a Sewage Treatment Plant and Servicing for more information.

A properly functioning Sewage Treatment Plant can discharge to surface water. If discharging to ground you have more options than with a Septic Tank as you are effectively discharging clean water. 

What should you look for when choosing an Installer? 

  • Look to get at least 3 quotes. Check these quotes are from Ltd companies. There are lots of one-man-band installers that pop up on Google Ads then disappear after taking deposits. You can check if a company is Ltd here
  • Insist that you meet the engineer who will undertake the job at the quotation stage. If the person is not going to do your job they are a salesman. One of the main drivers of us setting up this company is to get away from the Salesman. 
    • The main problem with Sales led quotations are the Salesman are only interested in getting the sale.
    • They could not install a plug. This applies to all the salesman we have met in this sector. Hair products and the latest fashions are normally their thing.  As well as getting the unsuspecting customer to hand over their money. 
    • They will tell the customer they can have whatever they want. The engineer then turns up and has to try and turn an impossible dream into a reality.
    • This leads to upset customers and systems that do not work properly. Moreover these salesman led businesses often do not really have any trained engineers. They just send out the cheapest groundworkers and agency staff they can find. These laborers don’t really care about the customer or the company and will generally undertake a poor install. 
  • Do a little research, our guide to buying a sewage treatment plantis a good start, as well as reading the rest of this page.  Other essential reading is our Summary of the General Binding Rules for Septic Tanks and Sewage treatment plants.
  • Avoid the local farmer and tarmac company, Sewage Treatment Plants need an expert to install them. 
  • Look at the finances of the company that are coming out to visit. Every Ltd company has to file their accounts on Companies House. So once you have found the company click on its Filing History. This will show a list of all of the statutory documents, find the last set of accounts, ook at the pdf. Find the page with the Balance Sheet in the heading.  There will be a line that says Total Assets less Current Liabilities. If the number here is in brackets (£,0000) It means the company has debts that are due in the next year which exceeds the total value of the whole company.  These companies are not solvent, their warranties are meaningless and whatever you do not pay them a deposit! 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 that visit. Again ask to meet the person who will carry out your job. 
  • 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. 

Want to learn more?

We have a large collection of articles containing the answer to all of your questions. Check out our Blog Page 


Our Core Services: The Sewage Treatment expert Installers

On the 1st January 2020, all Septic Tanks that discharge to a Stream, Watercourse or Drainage Ditch will become illegal and will require replacing with a Sewage Treatment Plant. Please see here for more details.

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Expert wastewater treatment engineers who specialise in Septic Tank and Soakaway replacements as well as Sewage Treatment Installations. We are based in the New Forest, Hampshire but operate across the South Coast as well as Wiltshire, Somerset, Devon, Sussex, Surrey, Oxfordshire, and Berkshire.

The Home of Septic tank and private drainage system solutions. 

Based in the New Forest, Hampshire on the border with Dorset and Wiltshire we operate an expert team of off-mains drainage specialists. This encompasses Septic Tank, Soakaway and drainage system problems, installations, blockages, and servicing. In addition, any issues relating to cesspits and sewage treatment plants.

Homeseptic offers high quality, professional advice, repairs and installation for all aspects of effluent cleansing and disposal across the south of England. Whether you’re looking for septic tank installation, sewerage treatment plants or systems, piping or soakaway solutions, Homeseptic employs only the most competent engineers in the drainage and treatment industry and knows exactly which solutions suit each property.

We only install and offer quality systems we believe in, from suppliers we know and trust.

New Forest Philosophy

As we have said Homeseptic is based in the New Forest. A great location in between the cities of Southampton, Salisbury and Bournemouth. We are a group of good friends who grew up together in the area.  Individually we all have grown tired of the way other Drainage firms are run. As a result, this is why we set up Homeseptic. If you want to know more please check out our About Page

We want to actually put the customer first and turn up to do a great job that 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. Due to this, we offer upfront quotations with any variations discussed before we start work.

We are honest hard working professionals, which we hope you will agree with. As a result, it will certainly not turn up in flash sales vehicles and give you a load of chat and then do a terrible job. Our team will come with the job in mind and the aim of giving 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.

Choosing a Sewage Treatment of Septic Tank installer
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Choosing a Sewage Treatment of Septic Tank installer
A guide for those looking to find a Sewage Treatment of Septic Tank installer
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