Installation and Maintenance of Sewage Treatment Plants

Sewage treatment plants are generally accepted as the replacement for failing septic tanks, as it is becoming more and more common for local councils to require increasing ecological standards from septic systems. Sewage treatment plants are favoured as they purify the waste thoroughly, eventually emitting almost clean water.

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Sewage Treatment Plant FAQ’s

How do sewage treatment plants work?

A Sewage Treatment Plant consists of 4 main operations:

Within the tank:
Solid waste is broken down by bacteria and self-cleans
The result is filtered into the liquid waste.


  • Aeration is achieved by injecting compressed air into the liquid section, which generates bacteria.
  • This bacteria then works to clean the liquid effluent to almost drinking water standards – although this must not be ingested.

The cleanliness of the liquid sewage exiting the Sewage Treatment Plant has been approved by the Environment Agency to allow for dispersal into a running ditch, streams and lakes with flowing water. This therefore provides an eco-friendly alternative to simply filtering raw sewage through the ground. However, where any of these options are not available the clean effluent should go into a new drainage field and, in extreme cases a bore hole with the appropriate permit from the EA.

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, size of property, how many occupants, domestic or commercial, availability of dispersal medium and most importantly cost.

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

We always recommend the best system for the task and individual circumstances and endeavour to offer a number of options covering the complete range of treatment plants – all type and cost variants will be explained to you.

What does our sewage treatment plant installation service include?

As part of our aim to continue increasing our exemplary customer service standards, we will:

  • Engage with the building inspector for final approval and issue of a Building Regulations Certificate.
  • Offer our optional 5-year annual servicing and maintenance contract
  • Provide the following documents
  • A 2-year groundwork guarantee on all installation and construction work.
  • A customer file containing all manufacturer’s instructions and warranties.
  • A Certificate of Completion for the installation – as required by law.
  • A Part P Electrical Connection Certificate.
  • A Maintenance Schedule – as required by the EA for the upkeep of the tank.

Benefits of Proseptic

No obligation sewage treatment advice

  • If you are have any questions about sewage treatment plant installations or are unsure if your existing septic system meets the latest regulations, please get in touch. Our friendly, expert team are always happy to share our expertise to help you make the right decisions.

Fitted by expert engineers

  • Sewage treatment surveys, inspections, installations and on-going maintenance are carried out by our team of highly experienced engineers. We pride ourselves on our customer service which is why most of our work actually comes from client referrals.

What you can expect from Proseptic

  • Our customers are more than a sales opportunity. We want your sewage treatment plant to work for you. Therefore, we deliver all sewage treatment plant installations with longevity, quality and efficiency with minimal hassle.
  • We endeavour to explain all sewage treatment options to you so that you can feel confident and make an informed decision, armed with all the information available.