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supply

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

    What is correct toilet supply line

    Hi. I need a new toilet supply line but don’t know the size type of the fitting at the shut off valve. It is not 3/8 compression. It is a plastic nut about the same size as the one going into the cistern but has a different thread. Attached is a photo. Can you advise. Thanks.
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    • correct supply toilet
    • Replies: 2
    • Forum: USA
  2. A

    Water Supply from Washing Machine Feed

    We have a utility room with a washing machine but no sink. Wife wants sink. There is room to fit one and the waste will connect to wahing machine waste but the problem is in the water supply. Currently there is only hot and cold washing machine hose fitting isolators attached to very short...
  3. T

    Anyone know if this is a gas supply?

    Hi everyone, I’m just DIYing a bathroom refurb and came across this blanked off pipe in the wall that protrudes out about 2cm. The previous owners tiled round it and left it exposed which makes me think that it was left in situ on purpose. We don’t actually use gas in the house and don’t have a...
  4. L

    Mains supply to mixer tap is pushing cold water to hot water pipe

    I live in an apartment block where generally hot water is supplied from the communal hot water cylinder and cold water to bathrooms is supplied from cold water tanks in the loft. It is a vented system. However, in a basement flat and a ground floor flat cold water supply to bathrooms is...
  5. N

    How Yo Connect Water Supply To New Bath Taps

    Hi I have a 22mm hot and cold water supply to new bath. The pipes finish with compression valves. I need a 500 mm tap connector hose to connect with half inch thread on the new bath tap. All the connectors at the main plumb merchants are 22mm x 3/4 inch. No one seems able to answer question...
  6. P

    Installing a tigerloop combi-3 in new heating oil supply installation.

    I’m replacing my single skin plastic oil tank with a new bunded oil tank. I’m going to replace the single 10mm pvc covered oil pipe too, so to keep the number of compression joints to a minimum, I’d like to fit an external tigerloop combi 3 de-aerator (the one that incorporates an isolation...
  7. C

    Water Butt supply to Washing Machine

    A few months ago I wanted to connect a 1000l water butt (fabricated from galv steel) to our washing machine. After trawling many forums and websites for advice the general consensus was don't bother. I like a challenge so connected up the butt initially with nothing else in line, the washer...
  8. C

    Water supply to fridge

    Hi, can anybody help, I am able to use my cold water supply to my boiler to also be used to plumb in my fridge and washing machine, thanks in advance
  9. P

    Best valve/tap type to limit water supply to reservoir

    We just had a waterhole bored and were lucky enough to find a flowing artesian, which delivers just over 500 gallons an hour without needing a pump. We need to feed only about a litre a minute into our reservoir, as this is sufficient for our rural household needs. I installed a Speedfit...
  10. K

    Strange water supply problem

    I have a seemingly impossible problem. I am not a plumber but I can at least understand some of it. We have just had the Water Board inspector here and even he went away flummoxed. OK ....we have a stopcock under the sink that is stuck open - no amount of force will turn it. We need to turn...
  11. @

    Cold water supply to a bathroom washbasin in a modern flat?

    I refer to modern purpose-built flats - built within the last 35 years, say. How common is it, in this type of accommodation, for the cold water supply to a bathroom washbasin to come indirectly through a cold water storage tank? Or is it far more common for the cold water supply to come...
  12. U

    Pros and cons of running boiler gas supply pipe indoors Vs outdoors

    Hi all, Does anyone have any feedback as to which is best. Running the pipe from the outdoor gas meter to a new boiler on an outside wall or run the pipe under the floor (suspended timber) which is our existing setup and the new boiler is being sited in same location as old. I ask just in...
  13. @

    The cold water supply to kitchen sinks and bathroom washbasins

    For residential housing, what are the current regulations and/or recommended/standard practices regarding the supply of cold water to the taps on kitchen sinks and bathroom washbasins? Must the supply come directly from the mains or can it come from the cold water storage tank? Or is the...
  14. Stants

    Connecting Grohe shower using adapters to 15 mm supply

    Hi I've purchased a GROHE | Euphoria 260 Exposed Shower ( looks nice ) however Im missing some initial connecting adapters the installation instructions say it comes with " easy install adapters " and threaded tape ....I have neither of these ,all I have is the " S " unions ... so I did a bit of...
  15. MichaelO

    Water supply line pressure: one too low, one too high

    Two connected houses in our 70s condo development, everyone served by one water meter at the road. 833 has 40 lbs of pressure while attached house 835 has over 100 lbs. -- no problems in either house or immediately outside -- and no pressure relief valves or shutoffs. Plumber traced the...
  16. B

    Is 22mm supply pipe always required for combi boilers?

    Hi All, I need your advise as I'm really concerned here. I only just had regular boiler replaced with combi (Vaillant ecoFIT Pure 25kw). I had few surveys done and everyone stated the gas supply pipe from the meter to the boiler must be changed from current 15mm to 22mm. The plumber I used said...
  17. FreignotFrieg

    Shutting off water supply

    Need to do a relatively simple job(change washer on tap in kitchen), but the stop tap is seized, any idea if this is an isolation valve which will do the same job? Many thanks.
  18. V

    No cold water in bathroom.indirect water supply.

    Hi.. I would appreciate your advice. I am not get any cold water on the bathroom. Just dribbles in the bath and toilet..none at all on the wash basin. The supply is from the cold water tank. Thank you.
  19. D

    Toilet and Water Supply Pipe Sweating?

    Hi All, I have had this toilet for the past few years but noticing this year, that the water supply pipe is wet to touch and droplets are being formed. I initially suspected a leak however the whole base bottom of the cistern appears to be sweating which leads me to think it might be...
  20. R

    Sediment Filter on main supply Block of Flats

    Hi all, I'm on the committee on a community of owners for an apartment complex in Spain. It consists of 130 apartments. We have continual problems of sediment in the incoming water supply, blocking aerator in the taps, filters in shower mixers and even flexible pipes. It's a common problem...
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