A modern, environmentally compliant drainage treatment system with a sleek, low-profile graphite grey tank partially visible through a clean cutaway in a lush Cornish garden lawn. Surrounding it are neatly arranged gravel inspection covers, a compact control panel on a timber post, and a distant stone farmhouse, all under a bright but softly overcast UK sky. Diffused daylight creates even, shadowless illumination that highlights the system’s tidy installation and minimal disruption to the landscape. Photographed at eye level with sharp focus from foreground to background, the composition feels calm, professional, and reassuring, emphasizing hassle-free, compliant drainage integrated unobtrusively into rural domestic surroundings, in a clean, photographic realism style.
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Environmentally smart drainage

Our Sewage Treatment Plants are compliant, reliable, and easy to maintain. All surveys, installation, commissioning, and regulatory paperwork are handled by us, saving you the hassle.

A crisp overhead, bird’s-eye view of a rural UK property layout diagram brought to life in photographic realism: a stone cottage, gravel driveway, and rolling green fields, with the off-mains drainage route clearly visible as a subtly highlighted trench line leading to a buried treatment plant and outfall area. The ground is lightly marked with neatly cut soil and stacked turf, showing minimal excavation impact. Soft afternoon daylight from an overcast sky keeps colors neutral and professional. The mood is clear, ordered, and informative, with the drainage components arranged according to the rule of thirds for easy visual reading, conveying a sense of well-planned, fully compliant drainage design for domestic and small developer projects.

About Omniflow Cornwall Ltd

We specialise in environmentally compliant drainage for rural homes, small developments, and renovations off mains. From survey to servicing, we handle everything.

Thousands of UK properties still use outdated Septic Tanks that do not meet the Environment Agency’s General Binding Rules.

People in rural areas of the UK should consider replacing old septic tanks with modern sewage treatment plants because they are safer, cleaner, and better for the environment. Traditional septic tanks often only separate solids from liquids and can still release polluted wastewater into the ground, which may contaminate nearby streams and drinking water sources if the system is outdated or poorly maintained. Modern treatment plants actively process waste to a much higher standard before releasing it, reducing harmful bacteria and chemicals and helping protect wildlife and soil quality. They also tend to be more reliable, need fewer emergency repairs, and can meet newer environmental regulations, which helps homeowners avoid fines or costly upgrades later.

Upgrading not only helps keep your property mortgageable, but also supports both public health and long-term sustainability for rural communities.

Drainage Solutions

A close, ground-level view of a newly installed, environmentally friendly sewage treatment tank lid and inspection covers set into a perfectly reinstated lawn beside a renovated rural stone barn. The tank lid is a muted green, flush with the grass, with clean edges and subtle condensation on its textured surface, suggesting recent commissioning. A compact, weatherproof electrical control box is mounted on a short post nearby, with neatly routed conduits. Soft, diffused evening light from a cloudy sky creates gentle highlights on the plastic and metal surfaces and long, calm shadows in the grass. The composition uses shallow depth of field to keep the drainage equipment sharp while the barn and hedgerows blur softly, evoking a professional yet unobtrusive, countryside-friendly installation.

We offer surveys, design, installation, and annual servicing, ensuring regulatory compliance and seamless operation.

An immaculate, organized service van interior captured in photographic realism, with shelves neatly lined with inspection cameras, pipe testing equipment, sampling bottles, labelled service kits, and rolled technical drawings, all branded in subtle, coordinated colors. A portable control panel and laptop sit securely on a clean workbench, with a detailed drainage system schematic displayed on the screen. Cool, even LED strip lighting illuminates the space, creating crisp reflections on metal fittings and plastic cases, and casting precise, minimal shadows. Shot from a slightly elevated angle facing into the van, the composition emphasizes clarity, order, and professionalism, evoking confidence in thorough surveys, servicing, and paperwork handling for off-mains drainage systems across UK properties.

Services include preliminary survey and percolation test, septic tank removal, installation of a sewage treatment plant, attenuation and effluent management with full paperwork and annual servicing.

FAQs

1. Do I need to replace my septic tank in the UK?

You may need to replace your septic tank if it discharges directly into a ditch, stream, or river and does not comply with the UK General Binding Rules for Small Sewage Discharges.

2. What is a sewage treatment plant?

A sewage treatment plant is an advanced system that treats wastewater using natural biological processes and mechanical filtration. It produces much cleaner water than a traditional septic tank, making it safer for the environment.

3. Is it a legal requirement to replace my septic tank?

In many cases, yes. Regulations (such as the UK’s General Binding Rules) require that septic tanks must not discharge directly into surface water like rivers or streams. If yours does, you may need to upgrade to a compliant treatment system.

4. How is a sewage treatment plant better for the environment?

Modern systems significantly reduce harmful pollutants before releasing water back into the ground or waterways. This helps protect local ecosystems, wildlife, and water quality.

5. How long does installation take?

Once all the relevant tests and paperwork have been done, most installations are completed within a few days, depending on site conditions, system size, and ground works required.

6. Will my garden be damaged during installation?

There will be some disruption during installation. Most people chooses to have their plants sunken into the ground, but we will aim to keep this to a minimum and restore the area as much as possible afterwards.

7. Do sewage treatment plants require electricity?

Yes, most modern systems require a small amount of electricity to operate pumps or aeration systems, but they are generally energy efficient.

8. What maintenance is required?

Sewage treatment plants need periodic servicing (usually once a year) and occasional desludging to keep them operating efficiently.

9. Is the system noisy or smelly?

No—modern treatment plants are designed to run quietly and without odours when properly installed and maintained.

10. How much does it cost to replace a septic tank?

Costs vary depending on the size of the system, site access, and ground conditions. A site survey and percolation test will need to be done to provide an accurate quote.

11. Can you help with permits and regulations?

Yes, we can handle the necessary paperwork, ensuring your installation complies with all local environmental regulations and building control.

12. What happens to my old septic tank?

It can either be removed or safely decommissioned, depending on site requirements and your preference.

If there’s anything else you’d like to ask us, please get in touch

07985 401097

Contact us

Get in touch to arrange a rural site assessment and quote.

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Sewage Treatment Plant Installations Cornwall

Mon-Sat 8am-6pm
07985 401097
omniflowcornwall@gmail.com
Millbrook, Bolingey, Cornwall TR6 0DQ