Answers to the most common questions about septic tank replacement, installation, surveys and UK compliance.
Complete our 5-step enquiry form and we match you with a verified UK septic tank specialist covering your postcode. They contact you within one working day to arrange a survey or provide an installation quote.
Enquiring and being matched is free. The survey itself may be chargeable depending on distance and property type — your matched specialist confirms any fee before visiting. You're never obligated to proceed.
Our specialist network covers England, Scotland, Wales and Northern Ireland, including rural and remote locations. Enter your postcode on the enquiry form to confirm coverage.
A septic tank settles solids and discharges partially-treated liquid to a drainage field (soakaway) for further biological treatment in the soil. A sewage treatment plant (STP) actively treats the waste to a higher standard, producing cleaner effluent that can be discharged to a watercourse under permit. Your survey will recommend which is right for your site.
From enquiry to matched specialist: within one working day. Survey booking: typically 3–7 working days. Full installation: 1–3 weeks once you've approved a quote, depending on groundworks, permit requirements and seasonal ground conditions. Emergency repairs are dispatched same-day where possible.
No. All payments for surveys, installation and repair work are made directly to the matched specialist. We don't handle consumer payments — your contract is with the installer or surveyor, and their quote and invoicing is transparent from the start.
Common signs include slow-draining toilets or sinks, foul smells in the garden, soggy patches over the drainage field, or needing frequent emptying. If your system discharges directly to a stream or ditch, it's no longer compliant under the 2020 rules and must be changed.
Not always — but if you're adding bedrooms or bathrooms, your existing tank may be undersized. A survey will confirm whether the current system can handle the increased load or if an upgrade is required.
Installation requires professional groundworks, compliance checks and often Building Regulations approval. It's not a DIY job. Using a verified specialist ensures the system is correctly sized, sited and compliant from day one.
Most domestic tanks need emptying every 12–24 months, depending on tank size and household occupancy. Manufacturers typically recommend annual emptying as a baseline. Ignoring emptying is the single most common cause of tank failure and drainage-field collapse.
Cesspits hold all waste until emptied — they don't discharge anywhere. They need more frequent emptying (typically monthly) and are generally the most expensive option to run. Many owners replace cesspits with a modern septic tank or treatment plant to reduce ongoing costs. Our surveyors can advise on the right route.
Yes. Our network includes specialists experienced with pubs, restaurants, B&Bs, holiday parks, campsites, farms and rural estates. Systems are sized for peak occupancy and scheduled to minimise operational disruption.
Commercial sites discharging to a watercourse typically require a permit from the Environment Agency (or equivalent in Scotland, Wales and NI). Your survey will identify permit requirements and your specialist can manage the application process.
Sizing is based on expected peak daily usage — covers, bed-spaces, pitches or staff numbers — not just the building footprint. Holiday parks and hospitality sites need headroom for busy weekends and seasonal peaks.
Since 1 January 2020, septic tanks discharging directly to surface water (streams, ditches, rivers) have been non-compliant. Systems must either discharge to a drainage field via a soakaway, or be replaced with a sewage treatment plant discharging to a watercourse under permit.
Yes. During conveyancing, buyers' solicitors typically ask for evidence that any on-site septic system complies with current rules. Our compliance check provides the documentation needed.
Yes. Each nation has its own regulator and permit framework — SEPA in Scotland, Natural Resources Wales in Wales, and NIEA in Northern Ireland. Our specialists are familiar with the rules for your location.
Budgetary ranges: £3,500–£7,500 fitted for a standard domestic septic tank; £6,000–£12,000+ for a domestic sewage treatment plant. Commercial systems are priced based on capacity and permits. A site survey provides accurate costs for your property.
The main factors are: system type (septic tank vs treatment plant), groundworks complexity and soil type, drainage field size, access for plant and equipment, and whether permits or compliance upgrades are needed.
Some specialists in our network offer finance options for eligible customers. Please ask during your quote if finance would help you move forward.
Get in touch — we're happy to help.
