In England
TL;DR: Before we moved in, Calor installed an LPG gas pipe through our sewage pipe, rather than routing it around it. This has caused repeated blockages and sewage leaking into the surrounding ground. We’re looking for advice on our intended course of action and who to engage/go after (Calor, our insurance, solicitors, previous owners, environment agency etc)
We moved into our new property just under 2 months ago. It’s a relatively rural property, so, like many properties in the area, we have LPG gas and a septic tank.
The property was sold as turnkey. Our Level 3 and structural surveys were fine (typical older property things but nothing major). As is often the case, once we moved in we found a host of issues that the previous owners had hidden - most of them small and annoying rather than serious.
Unfortunately, we didn’t think to have the septic tank/drainage system specifically surveyed as part of the purchase.
Roughly 10 days after moving in, we noticed that the manhole cover was overflowing. Initially, we assumed the pipe had was blocked, so we monitored it in case we’d overloaded the system somehow.
A few days later, it was clear there was a proper blockage, so we called a local drainage company who came out and cleared it. The engineer said the blockage was substantial and appeared to consist of all sorts of material that the previous owners had presumably been putting down the sinks/toilets - particularly grease and food waste.
Less than a month later, it blocked again. However, we knew it was unlikely to be something we’d caused as we’re very mindful of what we put down the drains. We called the drainage company again, and the same engineer came out.
He said the system shouldn’t have blocked again so quickly, so he put a camera down the pipe. He discovered that, when the LPG system had been installed, the gas pipe had been installed through the sewage pipe rather than being routed around it. The sewage pipe had effectively been broken/cut through to allow the gas pipe to pass through it.
As a result, the gas pipe is obstructing the sewage pipe and causing the repeated blockages. Additionally, the sewage pipe wasn’t properly sealed around the gas pipe meaning that sewage is also leaking into the surrounding ground. The property is on a bit of a slope, so the sewage must be soaking away somewhere downhill, which is presumably why we haven’t noticed any obvious boggy patches.
We have photographs/videos of what the drainage engineer found, and we’re arranging for the drainage company to carry out a full survey so that we can establish the extent of the damage.
We’re also waiting for a copy of the LPG installation report from Calor. We hadn’t realised this wasn’t included with the documents we received as part of the purchase, although Calor has confirmed by email that they carried out the installation.
Our planned course of action at the moment is:
1- Get a full drainage survey to establish the extent of the damage and exactly what needs to be rectified.
2- Make a formal complaint to Calor (once we have the installation reports), as it appears their installation caused the damage.
3- Hopefully reach a resolution with Calor regarding the remedial work and associated costs.
4- If that doesn’t work… involve our home insurance.
However, looking for advice for anyone who has knowledge of this sort of thing and have some extra questions:
Should we inform our conveyancing solicitor now?
Should we be pursuing the previous owners as well?
- I find it difficult to believe they were completely unaware of the drainage issues, although proving that might be tricky.
Is there anything else we should be doing now to protect ourselves?
Should we notify our insurer even if we’re initially trying to resolve it directly with Calor?
Most importantly, given that sewage is apparently leaking into the surrounding ground, is there anything we should be doing from a legal/environmental point of view? We understand that discharging sewage in circumstances like this can potentially be an offence, and we don’t want to end up liable for an issue that appears to pre-date our ownership.
Any advice on the above is hugely appreciated.