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Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. These systems are what supply drinking water to populations around the globe. Aspects of service quality include continuity of supply, water quality and water pressure. The institutional responsibility for water supply is arranged differently in different countries and regions (urban versus rural). It usually includes issues surrounding policy and regulation, service provision and standardization.
The cost of supplying water consists, to a very large extent, of fixed costs (capital costs and personnel costs) and only to a small extent of variable costs that depend on the amount of water consumed (mainly energy and chemicals). Almost all service providers in the world charge tariffs to recover part of their costs.

Water supply is a separate topic from irrigation, the practice and systems of water supply on a larger scale, for a wider variety of purposes, primarily agriculture.

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  1. B

    Water supply and drain cover query

    Hi everyone, Today a plumber came round to do carry urgent repairs in the kitchen but needed to turn off the mains water supply to the building since it is flats. He went out to the front of the building and opened the water drain cover which is outside the front gate and on the pavement to...
  2. T

    Boiler and gas supply

    I have bought a property and this has a boiler and an immersion heater with a pump. If electric heater is off the boiler should heat the water as well. I have reinstated the water pressure as the old vendor has drained the whole system. As long as I had these airlocks the boiler was complaining...
  3. C

    Supply line diameter

    Hi, My question is about pipe diameters and how it affects available water in the home. I will be replacing the last 35 feet of an existing 1200 foot supply line. The supply line is 1” diameter but it connects to 3/4" pipe going into the home (through the foundation). If I use 35 feet of 1”...
  4. G

    URGENT Gas meter needs moving

    I need to move my gas meter about 6 feet away. The supply pipe would have to go back and under the wall behind as in the pictures. How do I go about it please? Do I need to contact British Gas or Gas Safe engineers do this kind of thing?
  5. J

    Old 'Town Gas' supply pipe

    Found an old capped off pipe when we removed the kitchen cupboards. Can anyone help advise how to get it removed? Please no guess work I can do enough of that myself, I also know how to Google gas safe engineers. Just wondering if anyone else in has one, has had theirs removed or has removed one...
  6. C

    32mm MDPE supply pipe upgrade for flow?

    Hello all, Currently suffering from poor internal flow rates near the internal 20mm stopcock of 10L/min. Want to upgrade system to either unvented cylinder or large storage combi to feed 5 bedrooms/1 bathroom/1en suite. Affinity water have confirmed supply pipe to the boundary stopcock is...
  7. D

    No Water After turning Supply back On

    Hi There, I work after from home 2 weeks at a time and recently started to turn off the water supply to my flat. But on the two that I have done it on my return from my trip when I turn the water back on I get nothing. Eventually I have to call a emergency plumber who is also mystified as why...
  8. M

    Dishwasher Cold Water Supply Hose Leaking

    Hi I have a dishwasher cold water supply that is leaking (See Photos). My initial thought was the washer was maybe gone but looks ok. Thought about PTFE tape but everywhere says this shouldn't be needed? Any suggestions? Thanks!
  9. J

    How to convert current mixer valve tap to a cold water supply inlet.

    Any plumbers can advise the best way to convert the current mixer valve tap to cold water supply inlet for electric shower. I have mixer valve tap , I would need to install a new electric shower on shower area wall .Currently is the mixer valve tap. I want to know how to do before I ask the...
  10. A

    Disappointed in hot water supply

    I had a new central heating system installed a year ago but whilst the radiators seem okay I am not happy with the hot water supply. I live in a bungalow so the boiler is on the same level as the radiators. When I turn on the hot water tap I have to run off what seems like at least a gallon of...
  11. K

    Gas pipe supply size question for new boiler

    So we are looking at a new vaillant ecofit pure 418 regular boiler but have a question about the gas pipe size requirements.. At the gas meter the pipe size is 15mm where it then runs under the kitchen floor before exiting at the the other side where the existing boiler is located (old baxi)...
  12. T

    Connector for combined bath overflow and supply

    I need advice on a water inlet pipe for a combined bath overflow and supply. I have uploaded photos. On one side is the attachment i need. In the attached pics one side of the fitting has the connector I need. It's missing from other side. Also how do you remove the fitting on left side? Looks...
  13. S

    My water supply is somehow linked to neighbours water usage and it's affecting my shower (Shared main?)

    Hello Everyone, I hope someone can advise on this problem that is annoying me more and more. I live in a 1900s mid terraced property. My water supply is somehow linked to my neighbours water usage and this is now really annoying me. I can hear the water 'being run' through the water pipes in...
  14. E

    Water supply and drainage for x2 dishwasher / sink

    Question about both water supply pressure and drainage requirements to run x2 dishwashers and kitchen sink. We are currently having a house built and this is the pipe set-up that has been installed. Our understanding is the supply is directly linked to mains supply via a junction point approx...
  15. B

    Can old redundant radiator pipes be used to feed water supply to new gas boiler ?

    Hello all. I'm new to this forum and need some advice about some concerns about a new gas boiler that I have had fitted by a gas safe engineer. My old boiler was a heat only (with a copper tank) and has been replaced by a modern combi boiler. It just used two 22mm pipes to feed to the diverter...
  16. I

    Advice needed. Converting gravity fed cold supply to mains fed to supply an electric shower?

    I want to put in an electric shower in my downstairs cloakroom which currently has a gravity fed cold supply from the tank in the loft. The shower I am looking to install needs a mains fed cold supply which I could do by disconnecting this pipework from the gravity tank and connecting the cold...
  17. J

    stabilizing the inlet supply pressure on a promax combi

    I have a Potterton Promax combi 28 HE A and it runs a pump when cold taps are turned off and there is a slight change in inlet pressure. I am thinking of putting a pressure reducer or non-return valve and/or an arrestor on the inlet pipe. I tried putting an arrestor on all the cold taps and...
  18. X

    Can I have water supply run to various areas of my manufacturing building without providing a sanitary drain for each water supply location?

    Hello all. I lease an industrial space in which I will be doing manufacturing of ceramic, pottery type items. The space is zoned for manufacturing and the applicable plumbing code is: State of Illinois Plumbing Code, 2004 edition and subsequent amendments. I am interested in having a licensed...
  19. X

    Can I have water supply run to various areas of my manufacturing building without providing a sanitary drain for each water supply location?

    Hello all. I lease an industrial space in the United States, in which I will be doing manufacturing of ceramic, pottery type items. The space is zoned for manufacturing and the applicable plumbing code is: State of Illinois Plumbing Code, 2004 edition and subsequent amendments. I am...
  20. B

    Advice Please -Fitting 60cm dishwasher? CW Supply and Waste?? Options???

    Hi All I am looking to fit a 600mm dishwasher, i will be fitting it under counter in a current 600mm 3 drawer carcass (i presume this is ok once all the drawres/side sliders are removed?) From left to right i have sink unit (single waste outlet on trap/u bend), space for washing machine (600mm...