Bob Mannix wrote:

They may have been reducing the pressure as they have realised that this is
the cheapest way to meet government leak reduction targets (less pressure,
less water lost). They have a statutory minimum to maintain so pressure and
leak management programmes concentrate on tuning the supply systems down to
the statutory minimum. It is, of course, possible that subsequent to such a
tuning operation (or coincidentally), someone has complained that they are
not getting their statutory minimum or, just as likely, a new development
tacked on the end of the supply pipe is under pressure and the pressure has
been increased to compensate further back, leading to an overpressure in
your road.

As to your banging, this is generally caused by loose pipework whacking
something as it flexes under pressure step changes such as shutting off a
fast flow. One approach would be to get someone else to help and to try and
isolate where exactly the physical bang is coming from and the direct cause.
Whatever the incoming pressure (within normal limits) a domestic
installation should be possible without the banging!


Thanks.

I am certain the pressure has not reduced - at full lick we have a
veritable Niagara coming out the tap! Seems even faster than before.
Can't think of any likely building changes in the area.

Well - I took your pipe looseness comment seriously and, despite being
fairly sure all was well, checked thoroughly. And found one definitely
wobbly pipe and a questionable section. Fixing those solidly has
improved things a bit - but still getting some so I will have to search
for any other possibilities. (The difficulty is that some of the
pipework is seriously inaccessible.)

--
Rod

Hypothyroidism is a seriously debilitating condition with an insidious
onset.
Although common it frequently goes undiagnosed.
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