Drellingore Posted January 24, 2023 Share Posted January 24, 2023 Has anyone got any data points that they'd be willing to share on how ridiculously expensive it would be to connect to a public foul water sewer 800m away? The shortest distance to said sewer is a straight line along which a road runs, which may or may not make things harder or more expensive! My instinct is that the costs would be exorbitant, but there's a few houses all paying to empty cesspools regularly, so maybe there's some possibility to all chip in or something. Link to comment Share on other sites More sharing options...
Conor Posted January 24, 2023 Share Posted January 24, 2023 (edited) Rough guess, £130k. That's based on a laying rate of £100/m for 160mm PVC, 10x MHs at £1k each, £10k for traffic management and £10k for design and management, and 20% uncertainty / contingency. Assumes no water course crossings, private land, deep excavations, utility diversions or difficult ground conditions. Those rates above are from a few years ago and from a large framework supplier so I'm not sure how realistic.... Edited January 24, 2023 by Conor 1 1 Link to comment Share on other sites More sharing options...
nod Posted January 24, 2023 Share Posted January 24, 2023 Probably better with a treatment plant Link to comment Share on other sites More sharing options...
Drellingore Posted January 24, 2023 Author Share Posted January 24, 2023 Thanks @Conor, I really appreciate even a rough ballpark figure. I'm so new to all this, that I had no idea how many zeroes to be thinking about I've just found a guide to connection charges from the appropriate water company, so I'm going to wang some numbers in a spreadsheet and update the thread when I've got a better idea. Your estimate will give me confidence as to whether I'm reading the right document and understanding it at all Link to comment Share on other sites More sharing options...
Redoctober Posted January 24, 2023 Share Posted January 24, 2023 23 minutes ago, Drellingore said: My instinct is that the costs would be exorbitant, but there's a few houses all paying to empty cesspools regularly, so maybe there's some possibility to all chip in or something. Hello - yes I suspect the costs will be exorbitant, as others have suggested. That said, I would have thought that the cheapest way would be to install your very own treatment plant [ modern words for old school septic tanks!]. There are some very good options out there for you to consider - see previous threads for some ideas - as for them being emptied regularly - well I don't accept that. The types used by many on here and speaking from personal experience, we empty ours every 3 years! The cost of doing so can be anything from £150 - £300 depending upon the contractor, and notice given etc. Link to comment Share on other sites More sharing options...
Drellingore Posted January 24, 2023 Author Share Posted January 24, 2023 Thanks folks! Using the data from the Southern Water PDF, the midpoints on prices (I've no idea how wide or deep the pipes would need to be), and @Conor's estimate of 10 manholes, it comes out at the rather eye-watering £1.6m. Probably not practical! As for the recommendations about treatment plants - thanks, we've considered that. We're in groundwater source protection zone 1 which precludes any sort of discharge whatsoever without an Environment Agency permit. I'm planning on applying for one of those, but we're struggling to find space for the required drainage fields and so wanted to sense-check other options. Link to comment Share on other sites More sharing options...
markc Posted January 24, 2023 Share Posted January 24, 2023 Ouch! That could inflate your cost / m2 1 Link to comment Share on other sites More sharing options...
Thorfun Posted January 24, 2023 Share Posted January 24, 2023 23 minutes ago, Drellingore said: As for the recommendations about treatment plants - thanks, we've considered that. We're in groundwater source protection zone 1 which precludes any sort of discharge whatsoever without an Environment Agency permit. I'm planning on applying for one of those, but we're struggling to find space for the required drainage fields and so wanted to sense-check other options. modern sewage treatment plants output pretty clean water. do your research and find the cleanest outputting STP and put that to the EA and see what they say. Link to comment Share on other sites More sharing options...
joe90 Posted January 24, 2023 Share Posted January 24, 2023 My Vortex discharges pretty clean water and allowed into a semi dry ditch. https://www.wte-ltd.co.uk/vortex-sewage-treatment-plant.html Link to comment Share on other sites More sharing options...
ProDave Posted January 24, 2023 Share Posted January 24, 2023 2 minutes ago, joe90 said: My Vortex discharges pretty clean water and allowed into a semi dry ditch. https://www.wte-ltd.co.uk/vortex-sewage-treatment-plant.html When I was looking for one, I found the Vortex, BioPure and Conder (the one I chose) were all pretty much the same spec and the cleanest ones I could find at the time. The discharge from mine is certainly a clear odourless liquid. Link to comment Share on other sites More sharing options...
Mr Punter Posted January 24, 2023 Share Posted January 24, 2023 Southern Water likes to discharge their raw sewage into rivers if they can't discharge into the sea. Link to comment Share on other sites More sharing options...
Drellingore Posted January 24, 2023 Author Share Posted January 24, 2023 23 minutes ago, Thorfun said: do your research and find the cleanest outputting STP and put that to the EA and see what they say Thanks, I have done, and am looking at a Solido Smart combined with four Tricel PuraFlos. This should get BOD, SS and NH4 all <1mg/L. This is what's going to be in the details of the EA permit application that I mentioned earlier. Those aren't the problem though - the issue that I have is that I can't find space for the drainage fields that will be required for infiltration after treatment. 11 minutes ago, joe90 said: My Vortex discharges pretty clean water and allowed into a semi dry ditch Is it in groundwater source protection zone 1, and do you manage to get an EA permit for it? I don't have a semi-dry ditch available. 8 minutes ago, ProDave said: When I was looking for one, I found the Vortex, BioPure and Conder (the one I chose) were all pretty much the same spec and the cleanest ones I could find at the time. The discharge from mine is certainly a clear odourless liquid. That's encouraging to hear, especially as I'll be adding tertiary treatment beyond that. I don't think the cleanliness will help with the drainage field conundrum though. Link to comment Share on other sites More sharing options...
Drellingore Posted January 24, 2023 Author Share Posted January 24, 2023 I should probably add that I initially asked a very specific question with no context as to what problem I was trying to solve. This is because I've noticed in my brief time on BuildHub that the more one explains, the greater the likelihood of "you shouldn't do it like that" replies. However, I think I've now created the opposite problem where people are trying to be helpful but with incomplete information. Suggestions on what balance to strike would be welcome 1 Link to comment Share on other sites More sharing options...
joe90 Posted January 24, 2023 Share Posted January 24, 2023 1 hour ago, Drellingore said: Is it in groundwater source protection zone 1, and do you manage to get an EA permit for it? I don't have a semi-dry ditch available. No, and yes we got an EA permit for it, reason for ditch was we are on solid yellow clay so drainage field was a no go. 1 Link to comment Share on other sites More sharing options...
nod Posted January 24, 2023 Share Posted January 24, 2023 Is there a reason why your not considering a Treatment Plant Most on here have gone down that route We had a sewer 20 meters away on our last build But settled on. TP as quote where coming in at around 40k Link to comment Share on other sites More sharing options...
ToughButterCup Posted January 25, 2023 Share Posted January 25, 2023 15 hours ago, Drellingore said: .... Suggestions on what balance to strike would be welcome Ring the EA and talk to them. Their response will help formulate your application. It helps (here - BH) to start with a pithy problem statement (the fewer adjectives the better) and an accurate post title. Followed by a broader description with context as necessary. Format the text to aid readability. Use white space to emphasise key issues. Readers skim. They don't read unless the post is relevant to them Finish with a clearly expressed question. A joke helps. Link to comment Share on other sites More sharing options...
Drellingore Posted January 25, 2023 Author Share Posted January 25, 2023 11 hours ago, nod said: Is there a reason why your not considering a Treatment Plant Is that different to a package treatment plant? I'm currently going down the PTP route, which is <£10k. 21 minutes ago, ToughButterCup said: Ring the EA and talk to them Thanks, already have 21 minutes ago, ToughButterCup said: A joke helps. My favourite is: Why does Noddy wear a bell on his hat..? 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted January 25, 2023 Share Posted January 25, 2023 6 minutes ago, Drellingore said: ... Is that different to a package treatment plant? I'm currently going down the PTP route, which is <£10k. ... No. The issue is where the discharge (of whatever quality) goes - in this context a drainage field. You appear to me already to have done some thorough research. We had exactly the same problem. Not enough land for a drainage field and one neighbour who refused to consider the issue. Another neighbour actively on the 'over my dead body ' warpath. How tight is space? I ask because I'm keen to have a closer look to see if I (we) can help . An anonymised map perhaps ? Link to comment Share on other sites More sharing options...
Gone West Posted January 25, 2023 Share Posted January 25, 2023 56 minutes ago, Drellingore said: My favourite is: Why does Noddy wear a bell on his hat..? I like: Why do elephants have Big Ears? Link to comment Share on other sites More sharing options...
nod Posted January 25, 2023 Share Posted January 25, 2023 4 hours ago, Drellingore said: Is that different to a package treatment plant? I'm currently going down the PTP route, which is <£10k. Thanks, already have My favourite is: Why does Noddy wear a bell on his hat..? Yes the same Well under 10 k if you put it in with your Groundwork’s Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now