31 January 2024 – 2 Minute Read

Depending on the size, the typical cost of septic tank installation is usually around £150 to £250 a day. If you have a bigger septic tank, it will take longer to install, with larger septic tanks taking between 5 and 7 days to install, averaging a cost of around £3,000. Smaller tanks will only take between 2 and 4 days to install, costing about £1400.