Minimum mains water flow rate

[Fitzthefool]

Hi all.

Bumped into a guy who worked for a water supply company the other day and he mentioned that the supply company has a duty to be giving at least 10 litres per minute to a property. Is this true and if so is it true for all of the UK?

regards, chris

 

[townfanjon]

I think it varies pal, i think the pressure has to be a min of 1 bar as well

 

[noggin78]

The one bar rings a bell. I know you cant pump off the mains anymore than 12 l/min (without authority approval) so would be in that region.

 

[Ch4 plumbing]

I think it varies pal, i think the pressure has to be a min of 1 bar as well

It's not even that, I think it's 0.8bar but I might be wrong

 

[townfanjon]

It is amazing how water pressure is so different all over the country for obvious reasons. You lads from the smoke wont sell many PRV's lol

 

[crush]

1 bar and 10 lpm at the water undertakers boundary. not in your property

generally speaking the boundary is at the undertakers outside stopcock

 

[Reg Man]

Oftec... minimum .7 bar at 9 litres/min...

 

[cr0ft]

The Guaranteed Standards Scheme published in 2008 by OFWAT. 0.7bar minimum pressure in the communication pipe. Nothing about flow rates that I can see in there though.

It even mentions compensation amounts that Water suppliers have to pay in the event of low pressure!! I will be claiming £25 off my water bill tomorrow now 🙂

 

[crush]

The Guaranteed Standards Scheme published in 2008 by OFWAT. 0.7bar minimum pressure in the communication pipe. Nothing about flow rates that I can see in there though.

It even mentions compensation amounts that Water suppliers have to pay in the event of low pressure!! I will be claiming £25 off my water bill tomorrow now 🙂

Just for clarification the compensation refers to DG3s which are points against the specific water company if your supply is unexpectedly interrupted for over 4 hrs.

The water company I work for sets its minimum pressure and flow above that of water regulations that is why I quoted those figures earlier in this thread.