Reduced water pressure at night

lapat

first off all you need to contact the water company and ask them for an inspector to visit to see if you have any issues with supply during the day.
secondley when they arrive ask them if they reduce your pressure at night for leakage purposes.
thirdly ask them to install a logging device outside your property for a minimum of 7 days to monitor the pressure over 24 hrs/7 days a week. thenask them for a paper copy of the results.
also when they visit ask them what there minimum operating pressure is it should be a minimum of 10 metres head most companys work to a minimum of 15mtrs head.
if this falls below this reading ask for them to rectify it and keep mithering them until they do. also with your paper copy of there logger results send it to the ccw they will deal with the company direct for you.
my guess is they are reducing the pressure at night to lower leakage as this is common practice and there is nothing wrong with it, as there is less demand on the system at night so the leaks lose more water as the pressure increases when less demand on the system. it is more than likely that they have just set the equipment a little to low and it may just need a tweak to give you the pressure you need and a good water inspector would recognise this

hope this helps

WATERWORKS

I am pleased to have found this thread. I have had my electric shower blown away at 00.10 in the morning by a drop in water pressure. Welsh Water assured me there was no leaks in the area and this was obviously true but did not admit to causing this problem themselves.

If they are going to do this and destroy peoples plumbing they should publish the times that the water system is unusable on the top of their water bills. The one shot cut outs in an electric shower cost £15 and probably about another £80 if you are unfortunate enough to have to call out an engineer. I don't, but it is a very difficult job to change this component on my shower and I am foaming at the mouth after finding out why it has happened. I will be going all the way through the complaints system first thing tomorrow. I have noticed the pressure has dropped again tonight.

telboyo

WATERWORKS wrote: »

I am pleased to have found this thread. I have had my electric shower blown away at 00.10 in the morning by a drop in water pressure. Welsh Water assured me there was no leaks in the area and this was obviously true but did not admit to causing this problem themselves.

If they are going to do this and destroy peoples plumbing they should publish the times that the water system is unusable on the top of their water bills. The one shot cut outs in an electric shower cost £15 and probably about another £80 if you are unfortunate enough to have to call out an engineer. I don't, but it is a very difficult job to change this component on my shower and I am foaming at the mouth after finding out why it has happened. I will be going all the way through the complaints system first thing tomorrow. I have noticed the pressure has dropped again tonight.

Where abouts in wales are you from? We get constant water pressure here in llanelli 350 days a year and when it stops raining we use the taps supplied by Dwr Cymru.

WATERWORKS

I live in South Wales and after my last comment I have checked my water pressure and flow. The statutory figures are 1 bar pressure and 1 gallon flow in 30 seconds. In the day time mine is 2.4 bars with the correct flow at the first point on the property. At night it is just 1 bar and the flow is still just within the limits. This means if I operated two things at once ie operate the shower and the washing machine fills I have a problem.

As I see the situation I can't complain, the figures are within the regulators limits, although I think the situation is diabolical. Lets just leave it to the insurance companies who will be paying for all of the frozen pipes as the high-tech. boilers lock out in the freezing winter conditions. They can fire the bullets, they have the money to pursue this.

Looking on the bright side if I am forced to replace my boiler, I will have an excuse not to fit one of those over engineered modern green boilers where you save £200 in gas and pay out £600 in maintenance in the third year as a relative of mine has.

withabix

WATERWORKS wrote: »

As I see the situation I can't complain, the figures are within the regulators limits, although I think the situation is diabolical. Lets just leave it to the insurance companies who will be paying for all of the frozen pipes as the high-tech. boilers lock out in the freezing winter conditions. They can fire the bullets, they have the money to pursue this.

Equipment which cannot operate when used in a property with a 1 bar supply cannot be suitable for use in the UK, so the problem lies with the manufacturer, not the water companies.