A septic tank is an essential part of many UK properties, particularly in rural areas – but it’s often not thought about until something goes wrong. Properly maintained, septic tanks should last for several years, even decades – but there are plenty of variables to consider. Here’s the lowdown on what to expect from your system and how to avoid unforeseen costs and problems.
The average life expectancy of a septic tank
The general range of lifespans is between 15-40 years, depending on the type and condition. All things being equal in terms of material and installation quality, steel tanks tend to last the shortest, due to rust and corrosion. Plastic or fibreglass tanks typically last longer, with concrete models being the most durable if properly maintained.
As a broad guide, you could expect the lifespan of a septic tank to run as follows:
- Steel: 15-20 years
- Plastic and fibreglass: 20-30 years
- Concrete: 40+ years
What factors can affect septic tank lifespan?
As alluded to, the quality of installation can play a pivotal role in how long your tank will last. If the quality of workmanship is below par, or the required regulations haven’t been adhered to, this can reduce functional lifespan significantly.
When it’s time to have a new septic tank installed, ensure the work is carried out by qualified professionals who understand local soil and water compliance. Similarly, seek professional support on other issues including septic tank size, material selection, site location and scheduled maintenance.
Another factor in the long-term operation is what goes into your system – with many items or substances potentially causing problems.
How can I extend my septic tank’s life?
There are several practical steps you can take to ensure you get the maximum use out of your septic tank:
- Don’t put FOGs, harsh chemicals or non-biodegradable items down the toilet or drains, as they can cause blockages and damage.
- Address any warning signs (bad smells, slow draining, pooling water) when you notice them, before they become a more serious problem.
- If you’re buying a property with an older tank, consider a homebuyer’s drainage survey to spot any issues before purchase.
- Septic tanks need regular emptying and inspection to work at their best – find a trusted provider to carry out professional maintenance.
Ready for a long and happy septic tank life?
Some septic tank failures can be blamed on bad luck – but a far more common cause is neglect. By not flushing unsuitable substances and trusting professionals to tackle issues like leaks, blockages and maintenance, you’ll be better off. If you’d like any advice on how to make sure your septic tank lasts as long as it can, please contact our experienced team.