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mains water pressure

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. A

    Mains water pressure and water softener/ leaking manifold

    Good morning I installed a Harvey’s water softener recently. Have a semi detached property with 3 showers and a 2 toilets with a mega flow cylinder 25mm mains pipe work with 22mm onwards. I put the softener before the prv which was pre installed with the unvented cylinder as the rep said...
  2. R

    Can you have mains pressure cylinder on a back bolier?

    I have been told that I can't have a mains pressure unvented hot water cylinder with a back boiler on a wood burning stove as the heat source is uncontrollable. Is there a method to make the heat source controllable? I was imagining that if the cylinder was at its maximum temperature then if...
  3. P

    My Mains water pressure has dropped after annual boiler service

    Hi, new guy here. I've just had my annual service on my combi boiler and the mains water supply pressure appears to be lower. Is there anything they could have done to cause this?
  4. D

    Mains Water Pressure Advice

    Hi all, My house is about 28 years old so some things are starting to fail with age. I changed the main water stopcock and well as the PRV as the stopcock was leaking and the pressure valve would not budge from 4 bar (even when it was disconnected). My main question is - what is the upper...
  5. N

    Unvented indirect with low pressure mains

    Hi, I live in a 9yr old 3 story townhouse with showers on the 1st and 2nd floor, a bath on the 1st and toilets and basins on all three floors. I've never been very happy with my shower and tap water pressures but have only recently investigated the issue. The house has an unvented indirect...
  6. deFoix

    Regular momentary dips in mains water pressure every 15sec

    Hi all, hoping for some help here. Over the last 2 months I've been experiencing dips in water pressure from my kitchen tap. The weird this is that these are momentary dips in pressure that occur every 15 seconds. It seems to happen in the mornings and evenings and is making my plastic pipes to...
  7. D

    Low mains water pressure

    Hello, Bought my house 3 years ago, a 50 year plus detached house on the coast of north west England. Lots of heating and insulating projects to do over the next couple of years. So I though I'd join this forum so I can find out some good ideas while getting my house up to scratch. Currently I...
  8. E

    Pressure Reducing Valve limiting mains water pressure why?

    Hello, I was hoping someone could answer a query that has puzzled me for a while and nobody has been able to help all that much. I have a new mains water supply coming into the basement which has replaced the old lead version. This new connection is instantly greeted by a pressure reducing...
  9. C

    Mains water pressure boost pump

    I was hoping to get a professional opinion regarding whether or not a booster pump (such as a Stuart Turner 'Flomate') would do what I want it to do. At present the flow rate in our house isn't terrible - about 10 litres per minute at its best - but that doesn't seem to go far if more than one...
  10. E

    Mains water pressure reducing vale for boiler?

    Hi All, Hoping you can advise. I'm no expert on the boiler front but i'm trying to figure something out. I have an Ideal istor boiler with a vented cylinder and boiler all in the one unit. The boiler has a shocking reputation but touch wood it's been great for 2 years since moving into the...
  11. H

    Salamander Mains Water Pressure Pump £210.00

    We purchased this to boost our mains water pressure for a new shower build when plumbing works were being done in September. Plans changed and we no longer need/used this as part of our new build. It was fitted by the plumber but not used so it comes with union joins too. -X1 Salamander...
  12. P

    Mains water pressure test.

    Hi guys! Silly question I'm sure but voices in head sowing seeds of doubt so apologies if a dumb waste of your time. However, I need to check the mains water pressure before installing a RO Unit. Need to know if need a booster or not. So, do I just buy a mains water pressure gauge (seen one on...
  13. A

    Low mains water pressure, float valve

    Hi all, im back again loooking for a little more advice pleases, just about to install a Pumped electric Shower with its own 25 gallon tank in loft, my question is do i use a low presure float valve or do i use a high presure float valve ????????? i was told to use a low presure valve due to my...
  14. M

    Is this Mains water pressure tester any good and what sort of tap do I use it on?

    Afternoon all Please could you advise me on this water mains pressure tester on what type of tap it should fit onto as it looks like it needs a bib tap outside garden tap type thread? Is this type any good? Its made by Monument at 10bar max pressure. Many thanks for any advice you can give!
  15. D

    Combining Mains and gravity fed system

    Hi all, Is it possible (has anyone tried) to combine a gravity fed system (tank in attic) together with the mains. Basically by passing the tank though putting a non return valve on the outlet of the tank. This I hope will add the pressure of water up to the mains pressure without need...
  16. K

    mains water pressure

    We have recently installed a closed pressurized system (magaflo ), in order to support our 2 new bathrooms with decent water pressure. While pressure is generally not great, between 6-9 am it is considerably worse. Our plumber believes this is due to increased demand in the neighbourhood during...
  17. P

    Siting of a hot water cylinder

    Hello I would be grateful for the following help I have a client who has a 1 bedroomed flat where I need to site a new hot water cylinder. The cylinder is for hot water for a shower a washbasin and kitchen sink As the property is small and to save space I was wondering if I could site the...
  18. C

    Testing Water Pressure

    I need to test the water pressure coming out of the bathroom taps (hot&cold) I've got a monument mains water pressure gauge but it comes with an adpater for a washing machine tap! Does anyone know if you can get adapters to fit ordinary bathroom taps, or a pressure tester that doesn't cost a...
  19. B

    High mains water pressure need reducing?

    I have just fitted a thermal store (Gledhill Torrent Solar RE) - I note the static water pressure rises to 4.6 bar in the late evening and sits around 4 bar at other times of the day - how important is it to fit a pressure reducing valve on the mains incoming? - not keen on reducing pressure if...
  20. S

    Need New Combi Boiler

    Hi guys 1st post Looking at getting a new combi boiler and 7 new rads fitted Current setup is 20 years old and past its sell by date Any recs on boilers and rads? Is a Magnaclean a good idea? Been looking at Worcester Greenstar 30si and Vaillant ecotech plus831 Cheers Mark:)
Creating content since 2001. Untold Media.

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