1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Are there any regs relating to underground fresh water pipes

Discussion in 'Building Regulations and Planning Permission' started by leew2, 11 Nov 2010.

  1. leew2

    leew2

    Joined:
    13 Dec 2008
    Messages:
    190
    Thanks Received:
    17
    Location:
    Lincolnshire
    Country:
    United Kingdom
    I am thinking of installing a sink within my (detached) garage for cleaning muddy boots etc. For this I will need to install a new foul waste pipe and a fresh water pipe for a distance of about 8 meters. I know the foul waste is notifiable and needs to conform to part H of the building regs but I cannot find any information on fresh water pipes.
    So I would like to know if there exist any regulations covering the fresh water pipe, or can I install it however I want. Specifically would it be permissible to put both the fresh and foul pipes in the same trench and if there a minimum spacing required? There does not appear to be any information in part H regarding spacing of fresh and foul.
    What I would ideally like to do is tee off the main supply pipe between the meter and where it goes into the house (the meter is on my land and is only about 2 feet from the outside wall of the house, It would be easier to tee off the other side of the meter but I know that won't be allowed for obvious reasons). I'd rather not dig up the kitchen floor if I can avoid it.
     
  2. Sponsored Links
  3. IJWS15

    IJWS15

    Joined:
    18 Oct 2006
    Messages:
    1,386
    Thanks Received:
    49
    Location:
    Staffordshire
    Country:
    United Kingdom
    Speak to your water supplier.

    When I replaced a lead supply Severn Trent had standards the new pipe and installation had to meet.
     
  4. jeds

    jeds

    Joined:
    16 Apr 2004
    Messages:
    4,085
    Thanks Received:
    526
    Country:
    United Kingdom
    As said above, check your local water supplier website. The problem with water is it all comes under local byelaws and they can be different depending where you are.
     
  5. theoldun

    theoldun

    Joined:
    18 Apr 2010
    Messages:
    1,244
    Thanks Received:
    326
    Location:
    Bedfordshire
    Country:
    United Kingdom
    Laying water supply and drainage in the same trench is not normally possible due to the fact that drainage trench is to falls and is not normally same depth as water service.
    It is generally accepted and approved by all water companies that underground water services should be laid at a min of 750mm deep, with a 25mm bed of sand directly under the pipe, 25mm sand directly around and above pipe, 75mm selected back fill, then back fill up to 300mm below ground level, warning tape and finish backfill.
    Point of entry into building to be through 100mm plastic duct 750mm below ground either through footings, foundation or below foundation, 87.5 long radius bend then 100mm duct up to finished floor level 750mm out from external wall face and with the MDPE pipe lagged in duct down to bend. The 750mm out from external wall face is not critical as long as you lag pipe.
    Of course none of the above applies if you do not notify water company. If you notify, there is a good chance they will want to inspect. If you do not notify, do what you want.
    Would suggest finding existing supply to check whether existing is cast iron, lead or MDPE If it is the two former, you can get fittings to connect to MDPE.
    News to us that water service comes under Local Byelaws. :eek:
    oldun
     
  6. hotrod

    hotrod

    Joined:
    26 Dec 2007
    Messages:
    1,162
    Thanks Received:
    110
    Country:
    United Kingdom
    This is an excellent fact sheet produced by United Utilities:

    How to lay a new water supply - fact sheet.

    However, if you are unsure of anything you should contact your own Water Supplier as their requirements may differ - although this is highly unlikely.

    hth
     
  7. Tipper

    Tipper

    Joined:
    1 Dec 2008
    Messages:
    1,144
    Thanks Received:
    103
    Location:
    Devon
    Country:
    United Kingdom
    All the local water company regs are now encompassed in 'Water Supply (Water Fittings) Regulations 1999' as any decent plumber will tell you!

    (That tells you that most on here aren't plumbers but heating techies)

    If you want to avoid having to have the Water supplier inspect your installation you should use an Approved Plumber or go on a course and then DIY.
     
  8. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  9. Sponsored Links
Loading...

Share This Page