Typical cost per visit
MyJobQuote puts cesspit emptying at usually £175–£300 per visit. The visit itself is the same kind of job as a septic tank empty: the tanker pulls up, pumps out, and takes the waste to a licensed disposal site. The price reflects volume and access more than the type of tank.
What you are paying for is the tanker, the crew, the pump-out and the disposal. Extra hose, hard access and out-of-hours work are usually priced on top, so ask what the quote includes before booking — and get figures from two local carriers, because cesspit work is priced locally and the bands quoted below are one contractor’s example, not a market average.
For a septic tank estimate, use the emptying cost calculator. For a cesspit, the per-visit figure is only half the story — the other half is how often the tanker has to come.
Frequency dominates the bill
Because a cesspit does not treat sewage, everything that goes in stays in until it is pumped out. A typical household can fill one in weeks rather than months. Real intervals vary with tank size and occupancy — some cesspits need emptying every 4 to 8 weeks, others run longer — so treat any published interval as a starting question for your carrier, not a rule.
See septic tank vs cesspit for how the two systems compare.
Size bands: one Welsh contractor’s published prices
West Wales Waste publishes the size bands below. They are one contractor’s prices for one part of Wales — a useful reality check, not a UK average. Always ask two local carriers for their own figures.
| Size | Price band |
|---|---|
| 4,500 L (1,000 gallons) | £140–£180 |
| 9,000 L (2,000 gallons) | £190–£220 |
| 13,500 L (3,000 gallons) | £280–£330 |
| 18,000 L (4,000 gallons) | £380–£440 |
Annual cost: a thought experiment, not a quote
Put the two variables together with ranges, not false precision. A 4,500 L cesspit emptied every 4 to 8 weeks means roughly 7 to 13 visits a year. At £140–£180 per visit, that is in the order of £980–£2,340 a year. The same household with a septic tank empties once or twice a year, at roughly £175–£313 per visit — call it £175–£625 a year. The exact numbers depend on your tank, your household and your carrier, but the shape of the comparison is reliable: a cesspit is a running cost, a septic tank is an occasional one.
VAT on cesspit emptying
HMRC treats emptying a domestic cesspool as generally zero-rated for VAT, while emptying an industrial system is standard-rated. See HMRC’s guidance on VAT rates for different goods and services.