Septic Tank Emptying
Regular emptying of domestic and commercial septic tanks across Cornwall. Whoever does it must be a registered waste carrier. Most standard tanks take under an hour.
From £150Sealed cesspit needs emptying? Cesspits hold all waste and need more frequent pump-outs than septic tanks. Here's what it involves, what it typically costs in Cornwall, and how to check a firm before you book.
Cesspits are sealed waste-holding tanks. Unlike septic tanks, they don't break down waste or discharge effluent — everything that goes in stays inside until it's pumped out by a licensed tanker.
Because cesspits hold all the waste, they fill up much faster than septic tanks. A typical household cesspit needs emptying every 4–6 weeks compared to once or twice a year for a septic tank. That makes them the most expensive system to run long-term, but sometimes they're the only option for Cornwall properties where soakaway-based systems aren't viable — coastal cottages, properties with high water tables, or sites with insufficient drainage land.
If your cesspit is overdue, or you've moved into a Cornwall property with one and aren't sure how often it needs servicing, get a written price from a local firm that handles cesspit work as standard, and check it's a registered waste carrier.
We’re an independent guide, not a septic tank company. These are the honest options; pick whichever suits you.
Anyone who takes septic tank waste away must be a registered waste carrier. Whichever local firm you find, look it up on the Environment Agency’s public register before you book.
Ask for the firm’s waste carrier registration and check it, get a written price that says what’s included (disposal, hose length, access), and ask for a waste transfer note once the job is done.
Leave your details and we’ll try to introduce you to one local septic tank firm covering your postcode. We’re still looking for local firms to work with, so we may not have one for your area yet. We’ll tell you who before sharing anything, and septic tank firms may pay us for introductions.
Whatever else is going on below ground at your Cornwall property, here’s what each job involves and what it typically costs. Or stick with cesspit emptying — your call.
Regular emptying of domestic and commercial septic tanks across Cornwall. Whoever does it must be a registered waste carrier. Most standard tanks take under an hour.
From £150Full cesspit pump-outs for sealed systems. Cesspits need emptying far more often than septic tanks, so the running cost adds up.
From £120New septic tank or treatment plant installation, fully compliant with the General Binding Rules 2020. Survey, install, commission: what a full job includes.
From £3,000Tank backing up, soakaway saturated, weird smells in the garden? Diagnosis via CCTV, then repair or replace: how to decide.
From £150 (survey)Blocked or slow-running drains cleared fast using high-pressure jetting. From kitchen sinks to main sewer lines.
From £80Camera inspections to diagnose blockages, root ingress, collapsed pipes, and drainage issues before they become expensive problems. A written report should be part of it.
From £150Prices depend on tank size, access, and your exact location. These are guides, not quotes: always get a written price before work starts.
Standard domestic tank (up to 2,700L). Price varies by access and distance.
Sealed cesspit pump-out. Larger cesspits (10,000L+) quoted individually.
High-pressure jetting. Most domestic blockages cleared in under an hour.
Out-of-hours and weekend work, where a firm has capacity. Ask for the price before they set off.
Find your nearest town guide for local access issues, typical prices and what to expect.
Everything you need to know about cesspit emptying in Cornwall.
A cesspit is a sealed waste-holding tank — everything that goes in stays in until it's pumped out. A septic tank, by contrast, breaks down waste using bacteria and discharges treated effluent to a drainage field or soakaway. Cesspits need much more frequent emptying (every 4–6 weeks typically) compared to septic tanks (every 6–12 months).
Most household cesspits in Cornwall need emptying every 4–6 weeks for a typical family. Holiday lets see different cycles depending on occupancy. If your cesspit is overdue you'll usually notice rising levels, smells, or alarms (if fitted).
Cesspit emptying in Cornwall typically starts from £120 for smaller units. Larger cesspits (10,000+ litres) and harder-to-access properties cost more — a firm will quote based on your specific situation.
Cesspits are usually a last resort — they only get specified when a septic tank or treatment plant can't be installed (e.g., insufficient land for a drainage field, very high water table, or strict environmental constraints). Running costs are significantly higher long-term because of frequent emptying.
Cesspits don't need separate Environment Agency registration like some septic tanks do — but the waste must be disposed of by a registered waste carrier. Check the firm on the Environment Agency’s public register of waste carriers before you book, and ask for a waste transfer note.