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water mains

A water supply network or water supply system is a system of engineered hydrologic and hydraulic components that provide water supply. A water supply system typically includes the following:

A drainage basin (see water purification – sources of drinking water)
A raw water collection point (above or below ground) where the water accumulates, such as a lake, a river, or groundwater from an underground aquifer. Raw water may be transferred using uncovered ground-level aqueducts, covered tunnels, or underground water pipes to water purification facilities.
Water purification facilities. Treated water is transferred using water pipes (usually underground).
Water storage facilities such as reservoirs, water tanks, or water towers. Smaller water systems may store the water in cisterns or pressure vessels. Tall buildings may also need to store water locally in pressure vessels in order for the water to reach the upper floors.
Additional water pressurizing components such as pumping stations may need to be situated at the outlet of underground or aboveground reservoirs or cisterns (if gravity flow is impractical).
A pipe network for distribution of water to consumers (which may be private houses or industrial, commercial, or institution establishments) and other usage points (such as fire hydrants)
Connections to the sewers (underground pipes, or aboveground ditches in some developing countries) are generally found downstream of the water consumers, but the sewer system is considered to be a separate system, rather than part of the water supply system.Water supply networks are often run by public utilities of the water industry.

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  1. W

    Water shut off cylinder

    Is it possible to replace inside part of the water shut off cylinder without replacing whole cylinder?
  2. J

    Water mains trench - bend radius

    I'm looking to replace my water supply. I will be digging the trench on my side myself. I have all the safe dig plans etc and found the guide on the southern water website: Slightly confused by the 750mm minimum from the outside wall. Is this an actual thing? Every stopcock I have ever seen...
  3. J

    Water mains

    Hi, had a look at the water mains on a new build. It's in a rural area, private water scheme. I'm trying to figure out if the supply will be enough There's 1/2" hydrodare, it gives 1.8 bar of pressure and 15 litres of water per minute. I know on my own house the static pressure is 4 bar and it...
  4. EPIC WATER MAIN TRENCH DIGGING B-ROLL: Dirt, Rocks, Shovels, Hitachi Demo Hammer & Beer

    EPIC WATER MAIN TRENCH DIGGING B-ROLL: Dirt, Rocks, Shovels, Hitachi Demo Hammer & Beer

    Just for fun video. You know it wasn't like this in reality. ;-) Digging a water service line trench. Fun B-Roll shots for an upcoming series on rerunning a new water service line from the water meter to the house. If you have dirt that turns into cement like the caliche clay found in our area...
  5. DripsnDropsBognor

    Materials for back filling water mains trench?

    Hi Boys and Girls, I am splitting currently supply inside into 4 and upgrading old 1/2 galvanized supply from the street into building without breaking pavement into waterboard stopcock. I am using a moling company to bore pipe in through a trench I have dug out. I have agreed to make good hole...
  6. E

    Green crystals coming out all the hot taps in the house? help please

    Hello, the house was refurbished over a year ago and now we have Green crystals coming out all the hot taps in the house? The water board say it's not limescale These green crystal like pieces are coming out of all the hot water taps and showers: we collect them from the tap filers: there are...
  7. R

    Wanted plumber to install new water mains

    I'm putting in a new rising main to my 1st floor flat. The pipe work is to run on the outside of the building in Insuduct. The water board will put in a new connection to the property boundary then a 750mm deep trench has to be dug to the Water Boards spec to the property (approx. 3m. long). I...
  8. N

    How does water in mains pipe make a noise like water running?

    In our semi-detached house - and also other houses 50 yards away recently had an issue whereby we could hear the mains water pipe sounding like water was running somewhere - not the actual trickling of water - but the sound of like a high pitch hum etc 24/7. The water board inspector came out...
  9. J

    Help with non existent pipe fittings!!

    First of all I know nothing about plumbing I apologise for any errors. This is for connecting mains water to a caravan. I need to link a black 28mm (pvc?) mains water pipe that cannot be pulled up or replaced into a 25mm mdpe pipe. The 25mm connects to 15mm in the caravan, so the 25mm could...
  10. K

    Hot water mains causing Pressure to rise.

    Hi all, recently noticed boiler pressure (Baxi 105e) was at 0. Topped it up to the boilers recommended 0.5 bar cold , still dropping. Went around the house and found two leaks on radiators, one at a blanking plug, one where water feeds in/out of radiator. resolved them both, great. It seemed...
  11. G

    water mains upgrade

    When upgrading the mains do thames water upgrade from the stopcock on the road to the house (pre laid pipe) or do they upgrade the communication pipe from the main supply to the stopcock and from the stopcock to the house? Im thinking if you upgrade the water mains to larger pipe size are...
  12. M

    Can i switch to cold water mains for upstairs taps

    Hi, sorry another question, im replacing my cold water tank and was wondering if there are any reasons not to switch the upstairs cold water taps to mains water rather than an indirect tank feed. The cold water tank feeds 2 taps and a shower. I have a mains pipe very close so would not be a big...
  13. S

    Water Mains and F & E Heating Help - What to do?

    I am going away for the winter Have a traditional Heating system F&E system. 2 Tanks in the Loft one Large cold water and the small one I presume is for the central heating. and a water cylinder in the Airing Cupboard down stairs and a Valiant Boiler down stairs both located in the kitchen...
  14. T

    90mm water mains

    The job im on at the minute has had a 90mm water mains run into the building which I need to put a stop tap and double check valve on for water board to inspect and then connect up. Its massively oversized for what its serving, 32mm would have been plenty. The biggest mdpe ive ever...
  15. U

    Water mains

    Hi I've got a problem the builder has put a incoming mains on a new build and didn't cap it and the other end is coiled on the path water board has told him to retify it so I've flushed it out with water and capped both ends the water board has come out again and said they wouldn't continue till...
  16. B

    New water mains through terrace house

    Mains pipe in concrete floor is leaking. Running new up wall through upstairs floors. What's the regs on logging etc
  17. spanner

    15mm water mains feed too small

    Hi guys. Never done this before. Have an unvented hot water cylinder to go up in a loft conversion and think I'll have to dig from the mains stopcock as the existing is old lead (7 1/2LB) 15mm and needs to be 22mm and feed back into the downstairs kitchen and up into the loft, connecting to...
  18. B

    Water Mains Calculation/Formula

    Evening all, I am currently quoting for a refurbishment of 10 apartments which are currently offices. Each flat will need its own metered water supply to feed a direct 160 litre unvented cylinder which feeds one bathroom in each apartment. The building currently has 2 x 25mm water mains...
  19. C

    Water Mains

    Hi, I need to replace the lead pipes with copper within the house, a little confused as I have like a hose pipe (but more rigid) from the stopcock, which then connects back into the lead. I think it's a 22mm compression straight, which sits half in the stopcock and the other connects onto...
  20. cr0ft

    Finding a leak on water mains in garden

    Hi all, Been phoned by a building company we work for. The customer definitely has a leak on the supply pipe (somewhere between the water mains and the internal stopcock). Are there any tools we can hire/use to help us pinpoint the exact location at all?? I assume not as the pipe will be...
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