Sewage Treatment Plants

In environments where access to mains drainage is not possible, a sewage treatment plant can be used to treat wastewater and make it suitable for discharge into a watercourse or drainage field.

Mawdsleys Pumps provides an all-encompassing service for the supply, installation, ongoing maintenance and emergency repair of domestic and commercial sewage treatment plant including maintenance of supply blowers (air pumps) for plants.

We also offer standard control panels / variable speed drives (VSDs) or bespoke control panels for sewage treatment plants to meet your requirements. For example, with telemetry to enable pump alarms to go to your mobile phone.

How Do Sewage Treatment Plants Work?

Sewage treatment plants break down solid waste to convert wastewater into a cleaner and more environmentally friendly substance. Using internal biozone chambers and a pump that airs the waste received, sewage treatment plants encourage the growth of friendly microbial organisms which break down and purify the organic waste.

Sewage treatment installation maintenance and repair

Sewage Treatment Plant Maintenance Requirements 

Sewage treatment plants should undergo regular maintenance to reduce the risk of a fault and ensure the plant is working correctly. Maintenance requirements vary based on size, type and age but typically sewage plants up to 18PE should be serviced by a professional once or twice a year. In commercial environments, servicing may be required more frequently.

Discharge Consent

If you have a sewage treatment plant, you will need to get discharge consent before releasing sewage. Mawdsleys Pump Service can assist with discharge water testing and acquiring discharge consent for your unit.

Methods of Sewage Treatment and Disposal

There are 3 common methods of sewage treatment and disposal: septic tanks, cesspits/cesspools and sewage treatment plants. Whilst all have their own drawbacks and benefits, sewage treatment plants are now the recommended systems for disposing of waste when not running on a mains water system:

Advantages Disadvantages
Cesspit / Cesspool

Cesspits are sealed underground tanks designed to simply store waste, no treatment occurs and the tank has no outlet meaning it must be emptied by a licenced professional.

·         Lower installation costs.


·         Sewage inside is not treated.

·         Must be emptied when full.

·         Can cause pollution if damaged.

·         Difficult to sell a property that relies on cesspit system.

Septic Tanks

Septic tanks store and partially break down organic waste, making the effluent suitable for discharge in some areas.

·         Lower installation costs. ·         Must be emptied on an annual basis.

·         Causes pollution and can harm wildlife as effluent is not 100% clean.

Sewage Treatment Plants

Sewage treatment plants use microbial technologies to break down organic waste, making it safe for discharge. There are many different types of sewage treatment plants available to suit all requirements.

·         Treats sewage inside to a safe level.

·         Eliminates the risk of potential diseases being discharged in the effluent.

·         More expensive than a cesspit or septic tank.

·         Requires regular servicing and emptying.

Domestic Sewage Treatment Plant

Expert Advice and Knowledge

When we first receive an enquiry regarding a new installation or service, one of our technical specialists will contact you to discuss your requirements, expectations and produce a system which is suitable for your needs and budget.

From here, we can recommend the system that’s right for you, taking into account the running costs, tanker charges, frequency of tanker visits etc.

Rest assured that all recommendations we make will be in line with best practices, upcoming legislation and your individual requirements.

Nationwide Sewage Treatment Plant Service

Mawdsleys Pumps has years of experience in the design, installation, ongoing maintenance and emergency repair of septic tanks and sewage treatment plants, our core services include:

  • Bespoke Design and Installation
  • Service Plans to allow smooth operation
  • Nationwide 24-Hour Breakdown Attendance 365 days per year
  • Upgrade of Equipment to meet Guidelines
  • Telemetry Units and Full Monitoring Systems
  • Pump Equipment Repair or Replacement Service
  • Compressor Motor Rewind and Replacement

We are familiar with all leading makes and models of sewage treatment plant from leading manufacturers and our sewage treatment plants range from homes and businesses right through to industrial sites and large leisure and retail parks.

Sewage Treatment Plant Experts

At Mawdsleys Pumps, we’ve been working with all types of pumping systems including sewage treatment plants for over 15 years.

For more information, call one of the team now 0117 954 8030 or fill out a contact form and we’ll get back to you.