P Mulvana
The appointment was incredibly easy to arrange, they were able to fit me in far quicker than I anticipated and the service was professional and clearly explained to me. Would recommend.
Professional off mains drainage
Our engineers provide professional advice on how to safely and efficiently carry out the necessary work, from installing treatment plants to emptying tanks, managing wastewater projects, and maintaining septic tanks and sewage treatment plants, among other tasks.
Stay compliant with General Binding Rules
Off mains drainage has changed, and, as a property owner, you are required to ensure that your system complies with the latest General Binding Rules. With regional variances across the UK, the rules specify how wastewater is treated and discharged from off mains drainage systems like septic tanks, cesspools, sewage treatment plants, and drainage fields.
When purchasing a property with off mains drainage, we recommend having your system inspected, as non-compliant discharges can lead to pollution, enforcement action, and costly remedial work. Our experts are available for 24/7 emergency support, whenever you need it, with no call out charges.
Find a local drainage engineer
We have hundreds of engineers across the country ready to tackle your drainage issues. Enter your postcode below to find your local team.
Off mains videos
Watch our videos below to see some of our off mains drainage services.
Septic tank installation
Ground drainage check
How we work
Our specialist teams are on hand to provide off mains drainage support, as well as any other services you may require.
Step 1
Contact us
We offer 24/7 support, and we have teams available across the UK in over 60 locations. When you call us, you’ll reach a member of the team who will take time to understand your problem.
Step 2
Free call out
Once we receive your enquiry, our team springs into action. We will respond within 15 minutes and can come out to your location straight away, depending on the urgency of the issue.
Step 3
Quote
During our visit, we’ll evaluate your situation. From here, we provide recommendations and a quote for prompt and reliable off mains services, if required.
Step 4
Work begins
After the quote is approved, we can start the work for you there and then to ensure your drainage issues are cleared quickly. We work in a way that minimises disruption to your property and clean up after the job is done.
Helping customers for over 30 years
Our experts are on hand to help you with your drainage needs, and we’re experienced in helping customers across the UK. Check out what our customers have to say about their experience with us.
Book an engineer right now
Need urgent help?
Do you have an urgent issue? Your local engineer will be in touch within 15 minutes to come and fix the issue.
Great, your engineer is booked
Booking confirmed
Next step: Our engineer will call you as soon as possible to confirm their time of arrival.
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Need help right now?
If you’ve got an urgent issue that can’t wait, call the number below to speak to a member of our team.
Why choose Drain Doctor
We have over 30 years of experience in drainage solutions, like off mains drainage. We are fully accredited, our engineers are DBS checked, and we provide an unmatched level of service to our customers.
Available 24/7, 356 days
Over 60 locations and 24/7 support
Our local engineers are always available to help you with any drainage or plumbing issues that you may be facing.
No obligation quote
At Drain Doctor, we pride ourselves on our transparency.
We provide a no-obligation quote before any work commences, and you’ll receive a fixed price for the work needed.
Rapid response times
When you contact us, we aim to respond within 15 minutes.
We’re known for our fast response time, and we can help provide a quick diagnosis and resolution, with minimal disruption.
No call out fee
When you book an engineer, you can rest easy knowing that you won’t have to pay any hidden consultation fees.
Our specialists are here to help and understand the problem at hand.
Fully accredited drainage company
We hold industry recognised accreditations, so you can be sure you’re receiving the best level of advice and service.
Find your local team
We have experts in over 60 locations. Enter your postcode below to discover your local Drain Doctor team today.
Frequently asked questions
If you’ve got questions about off mains support, take a look at our FAQs or get in touch with your local team.
An off mains drainage system is used in properties that aren't connected to the main public sewer network. Instead, wastewater is treated and stored on your land and then safely discharged or removed.
New rules require septic tanks to discharge into a BS 6297-compliant drainage field. In exceptional cases, an Environment Agency permit may be needed. If pollution is identified, you are required to upgrade your system to remain compliant and avoid fines.
As a property owner, you are responsible for ensuring your sewage treatment plant complies with legislation and prevents pollution. Systems must be CE marked to BS EN 12566-3, regularly serviced, and emptied, with records kept. They must also be repaired promptly if there are signs of contamination in the discharged water.
A drainage field is a system of perforated pipes that safely filters septic tank effluent into the ground. A compliant drainage field installed to BS 62797 standards may be needed if your system discharges to a watercourse.
Your go-to guide for all things drainage.
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