Sewage treatment plants are one of the most important elements of any modern off-mains drainage system. They provide safe, efficient, and fully compliant wastewater treatment where a mains sewer connection is not available. Unlike outdated septic tanks, treatment plants actively process and purify waste using biological treatment methods, producing a cleaner effluent that can be safely discharged into the ground or watercourses.
Since the introduction of the 2020 General Binding Rules, many traditional septic tanks are no longer compliant. If your system discharges directly into a watercourse, it must be replaced with a compliant sewage treatment plant to avoid hefty fines, environmental damage, or property sale delays. For homeowners, developers, and commercial sites across Surrey, Sussex, Kent, Hampshire, London, and the South East, treatment plant installation is not just best practice—it’s often a legal requirement.
By choosing a professional installation from Clearmasters, you ensure your property is protected against pollution risks, costly enforcement action, and future drainage failures. We install systems that are designed for longevity, reliability, and low running costs, giving you complete peace of mind that your wastewater is being managed in line with Environment Agency standards.
Clearmasters are experts in the installation, servicing, and maintenance of sewage treatment plants. With over 30 years of experience, our engineers handle the entire process—from site surveys and design through to installation, testing, and certification. Whether you’re replacing a failing septic tank or planning a new build, we deliver a tailored solution that ensures full compliance and long-term reliability.
A sewage treatment plant installation is not only recommended in certain situations, it is often a legal requirement under the 2020 General Binding Rules. If your current drainage system is outdated or you are building a new property, installing a modern treatment plant ensures your wastewater is managed safely, efficiently, and in full compliance with UK environmental standards.
Failing to install a compliant system when required can result in fines, enforcement action, pollution risks, and property sale delays. By investing in a modern sewage treatment plant, you ensure your drainage is future-proofed, environmentally friendly, and cost-effective for decades to come.
Our engineers provide tailored, site-specific installations, taking into account your property layout, ground conditions, and discharge requirements. From domestic households to large commercial premises, Clearmasters deliver installations that are correctly sized, properly positioned, and fully certified to UK standards.
The cost of a sewage treatment plant installation varies depending on a number of factors, Larger, commercial, or complex installations may require a higher investment due to increased capacity, excavation requirements, and additional compliance checks.
While the upfront cost of a treatment plant is higher than a septic tank, the long-term savings and benefits are significant. A properly installed system provides:
At Clearmasters, we provide free site surveys and no-obligation quotes, giving you complete transparency from the start. Our experienced team ensures you get the right system at the best possible price, with no hidden costs.
Every installation is unique, but our proven approach ensures a smooth process and long-lasting compliance:
We assess ground conditions, drainage layout, and discharge requirements. Our engineers also check soil permeability to ensure soakaway suitability if required.
We design a bespoke system, correctly sized for your household or business. This ensures optimal performance and compliance with environmental permits.
Using modern equipment, we carefully excavate and install the plant, minimising disruption to your garden, driveway, or business premises.
The treatment plant is integrated seamlessly with your existing drainage network and discharge point, ensuring smooth system flow.
We fully test the system, making sure it runs efficiently, quietly, and meets compliance standards before handover.
You’ll receive all necessary documents, including compliance certificates, and guidance on proper use and care.
There are several different types of sewage treatment plants available in the UK, each designed to process wastewater safely and effectively. The best choice for your property depends on factors such as size, location, soil conditions, and discharge method. At Clearmasters, we supply and install systems from leading manufacturers, ensuring you get a solution that is both reliable and compliant.
The correct treatment plant depends on:
Our team will carry out a full site survey and recommend the most suitable system for your property, ensuring it is correctly sized, positioned, and installed for long-term compliance.
Clearmasters have been installing treatment plants for over 30 years across Surrey, Sussex, Kent, Hampshire, and London. Our team are experts in both domestic and commercial installations, working to the highest industry standards.
We are approved installers for leading treatment plant brands, ensuring you get reliable equipment with strong manufacturer support. From small households to large industrial sites, our tailored solutions guarantee efficiency, compliance, and long-term peace of mind.
Alongside installation, we offer ongoing servicing and maintenance contracts to keep your system in peak condition, helping you avoid costly failures and fines.
Installing a sewage treatment plant is just the first step—regular servicing and maintenance are essential to keep it running safely, efficiently, and in line with UK regulations. A poorly maintained plant can lead to blockages, odours, pollution incidents, or even prosecution for non-compliance.
Most manufacturers and the Environment Agency recommend at least one service every 12 months. For commercial or high-occupancy sites, more frequent servicing may be required. Our team offers flexible maintenance contracts tailored to your property type and usage.
Yes. Treatment plants are the compliant alternative to septic tanks, producing cleaner effluent and avoiding fines under the 2020 General Binding Rules.
Effluent can discharge to a soakaway, drainage field, or watercourse depending on permits and soil conditions. We assess and design the correct solution for your site.
Small domestic plants are usually permitted development. Larger or commercial systems may require planning consent and Environment Agency approval.
Most domestic systems are installed in 3–5 days. Commercial or complex installations may take longer depending on access and site conditions.
Treatment plants require regular servicing (usually annually) and desludging to stay efficient. Clearmasters offers planned maintenance contracts.
Yes. All installations come with a warranty and certification. We only install high-quality systems from trusted brands, ensuring long-term reliability.
