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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

    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 My old boiler was a heat only (with a copper tank) and has been replaced by a modern combi boiler.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...
  2. 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...
    • Ian1706
    • Thread
    • advice america cold electric electric shower fed gravity mains needed shower supply usa
    • Replies: 13
    • Forum: USA
  3. 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...
  4. 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...
  5. 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...
    • bilabonic
    • Thread
    • advice america dishwasher extension options please supply usa valve washing machine waste
    • Replies: 3
    • Forum: USA
  6. S

    Mains Gas Supply Pipe Repair

    I was using a mini excavator in the front garden and cut the mains gas supply (website with gas location had it in the wrong place, but a disclaimer saying their info might be inaccurate - the engineer said it was probably moved when they changed the pipe to the new plastic sort). 1 Cadent...
  7. D

    Joining & Boosting Water Supplies

    We have 2 separately metered water supplies entering our property and these feed 2 sets of outside (garden) taps. Can we join together the supplies coming from the meters, put the water through a (domestic) booster pump, then split the output to feed the outside tap systems?
    • dakpoole
    • Thread
    • america boost supplies supply usa water
    • Replies: 0
    • Forum: USA
  8. L

    Non return valve to mains supply

    Hi Guys. I will be fitting an outside tap in my house. Teeing off under sink and direct to outside. Should i install a non return valve on mains ?
    • lattin
    • Thread
    • america mains return supply usa valve
    • Replies: 9
    • Forum: USA
  9. L

    Advice for boiler option for 15 mm pipe gas supply into the flat

    Need to replace a 20+ year combi boiler (doesn't work), it is in a 65 sq m (2 bedroom 1 bath/shower) flat on a second floor of a Victorian house in central London. The only other appliance that uses gas is a cooker. It is likely that the 15 mm pipe is all the way from the gas meter that is in...
  10. R

    outdoor kitchen water supply

    Do I need an anti-siphon valve for a dedicated outdoor Kitchen water supply ... supply comes from the house, out the brick wall next a spigot. Seems overkill ! ... is there a freeze protection rational for it ?
  11. M

    Can water flow rate be measured at the supply pipework?

    Hello Guys I recently posted a thread about low water pressure at taps in a new kitchen installed by a company using sub-contractors. I have 0.44 bar of hot water pressure and am getting a flow rate of 4.5 Lpm at the new hot monobloc. The Blanco people say that the taps are rated at minimum 0.3...
  12. J

    Grundfos Home Booster connected to drinking water supply?

    Hi all Amateur/DIYer here. I have just moved into a 3rd floor flat and it has a more complicated plumbing set up than I'm used to. There is a Grundfos Home Booster installed, which seems to be working fine. However I have noticed that it seems to be switching on and pumping (fairly loud hum)...
    • Jason90
    • Thread
    • america booster connected drinking grundfos home supply usa water
    • Replies: 6
    • Forum: USA
  13. S

    Water supply question

    Hi all, I have a fridge freezer with water/ice supply which I want to move to the garage. min the garage there is the boiler and supply to external tap. can the fridge freezer be connected to the same supply? thanks in advance
    • Spewy
    • Thread
    • america question supply usa water
    • Replies: 2
    • Forum: USA
  14. Reddwarf4ever

    Bore size for a shower hose with a Fully pumped supply

    this may sound a basic question, but it is important. I have seen so many conflicting opinions, even from manufacturers. Some say, just use the biggest bore possible, others say use a small bore 8mm for a fully pumped system & a large bore 11mm for a gravity system. There must be a reason why...
  15. P

    Old house garden water supply

    Hi I've recently moved to a garden maisonette which does not have a garden tap. I had a little poking around in the garden and found a small pipe coming out of the back of the house. After moving the square end around with a pair of pliers it turns out that's the water supply. Does it seem that...
    • pawkaldn
    • Thread
    • america garden house old old house supply usa water
    • Replies: 6
    • Forum: USA
  16. S

    Advise On Hot Water Supply To A Tennis Pavilion

    my local tennis club would like hot water to its pavilion, it’s only a smallish wooden clubhouse requiring hot water to two wash basins and a sink unit, floor to ceiling is only about seven feet high so no real head room for a gravity system, no gas available just basic electrics for sockets and...
    • silhillron
    • Thread
    • advise america hot hot water hot water supply supply usa water
    • Replies: 21
    • Forum: USA
  17. S

    Water supply pipes, who owns what?

    Hi, I live in an upstairs flat. A pipe burst inside of the flat below. The supply to the flat below tees off immediately after a stopcock under my floorboards. If I turn the stopcock off, its turns off supply to both flats. My question is: who is responsible for the burst pipe, me or the owner...
    • saiello2061
    • Thread
    • america pipes supply usa water
    • Replies: 0
    • Forum: USA
  18. G

    water supply sealing product

    Hi guys, organising a new water supply to my property, specs require a seal between the MDPE 25mm pipe and 50/63mm ducting, can't use builders foam and i can't find a product for this (severn trent shows what looks like a rubber reducing seal but i can't find it on any site
    • gator
    • Thread
    • ducting find mdpe product seal sealing supply water
    • Replies: 1
    • Forum: Ireland
  19. L

    15mm Towel radiator valves with 10mm supply

    I've bought a new chrome towel radiator as the old one is all rusty. I also bought new angled (standard) valves, 1/2" X 15mm as they too are old and rusty. But when I look at what comes out of the wall, it's clearly not 15mm pipe, looks more like 10mm (plastic). How have they gone from 15mm...
    • Laticsforlife
    • Thread
    • 10mm 15mm america radiator radiator valves supply towel towel radiator usa valves
    • Replies: 5
    • Forum: USA
  20. T

    Blocked pipework in potable water supply

    Dear all, I'm hoping you can help with this because our plumber is trying hard but he's struggling to solve the problem. I'll describe the system. The water enters the apartment in a washing machine cupboard. At the inlet and at the washing machine the pressure is high. The pipework then...
    • takechair
    • Thread
    • blocked pipework potable supply water
    • Replies: 9
    • Forum: Ireland
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