How often should a septic tank be emptied?
Most septic tanks and treatment plants are de-sludged at least annually, though the right interval depends on the tank size and usage. The service record logs each visit and sets the next service due date.
General Binding Rules 2020
Septic Tank / Treatment Plant Service Record
Fill it in on site, sign on screen, and send a professional Septic PDF before you leave the job.
Free to build · Send it with a 7-day free trial
A septic tank service record documents the inspection, servicing and emptying of a septic tank, package treatment plant or cesspool. It records the condition of the tank and its components, the effluent quality observed, any de-sludge carried out and the waste transfer details, giving the owner clear evidence the system is being properly maintained.
Under the General Binding Rules 2020 for small sewage discharges, operators must keep their system properly maintained, which in practice means regular servicing and de-sludging, typically annually. Sludge must be removed by a registered waste carrier with the paperwork to prove it, and buyers and conveyancers increasingly ask for maintenance records when a property is sold.
TradePlanr lets you complete the service record on your phone at the property, working through the system details, inspection checks, de-sludge and waste transfer information in order. Sign on screen, generate a professional PDF and send it to the homeowner or site operator before you leave, with a copy stored against the job.
What it covers
- System details: septic tank, package treatment plant or cesspool, with make and capacity
- The discharge route, whether to a drainage field or a watercourse, and any EA permit number
- Sludge level measured and the condition of baffles and dip pipes
- Checks on the blower or air pump, pumps and floats, and the high-level alarm
- Effluent condition observed and any ponding over the drainage field
- De-sludge details: whether the tank was emptied, the volume removed, the registered waste carrier and the transfer note reference
- The overall result, defects or recommendations, and the next service due date
When it's required
The General Binding Rules 2020 require small sewage discharge systems to be properly maintained, with regular servicing and de-sludging — typically at least annually for most tanks and plants.
Sludge removed from the system must be taken away by a registered waste carrier, and the transfer documentation kept as evidence. The service record captures the carrier and transfer note reference.
Package treatment plants are normally serviced to the manufacturer's schedule, and doing so keeps the discharge compliant and the plant working as designed.
When a property with a septic tank or treatment plant is sold, buyers and conveyancers expect maintenance records showing the system has been looked after.
How to issue it in TradePlanr
- 1
Enter the system details
Record the property, the system type — septic tank, package treatment plant or cesspool — its make and capacity, the discharge route and any EA permit number.
- 2
Record the inspection and service checks
Log the sludge level, the condition of baffles and dip pipes, checks on the blower, pumps, floats and high-level alarm, the effluent condition and any ponding over the drainage field.
- 3
Record the de-sludge and waste transfer
If the tank was emptied, note the volume removed, the registered waste carrier and the transfer note reference so the disposal is fully documented.
- 4
Record the result and next service
Enter the outcome, any defects or recommendations, and set the next service due date so the annual visit is not missed.
- 5
Sign and send the PDF
Capture the signature, generate the PDF service record and send it to the homeowner or site operator, with a copy stored against the job for their maintenance history.
Issue this certificate from your phone or the web
TradePlanr generates this and 45+ other gas, electrical, oil, plumbing and renewables certificates as proper PDFs — filled on site, signed on screen and stored against the job. Works even with no signal. Free to start.
Frequently asked questions
What are the General Binding Rules?
They are the rules for small sewage discharges in England, in force since 2020. Operators must keep their system properly maintained, which means regular servicing and de-sludging with records to prove it.
Who can take away septic tank waste?
Sludge must be removed by a registered waste carrier, and the transfer should be documented. The service record captures the carrier's details and the transfer note reference as evidence of proper disposal.
Do I need service records when selling a property?
Buyers and conveyancers commonly ask for evidence that a septic tank or treatment plant has been maintained. A file of service records shows the system complies with the General Binding Rules.
Can I complete the record on site?
Yes. TradePlanr lets you record the inspection, de-sludge and waste transfer details on your phone, capture the signature and send the PDF before you leave.