On Wed, 25 Jul 2018 19:31:59 -0000 (UTC), Andrew Gabriel wrote:

Water butt with rainwater is fine.

Can't use a hose for water delivered via the water main, even if it's
been used for bath/washing/etc. You can use a watering can, providing
you don't fill it using a hose.

That's broadly it. How ever the "legal notice" published by United
Utilities and linked linked from:

https://www.unitedutilities.com/emer...n-on-the-way2/

Makes for interesting reading.

At first glance it seems to contradict itself, or is at least
confusing, over "grey water".

If some one has a Blue Badge or on the "Priority Services Register of
United Utilities Ltd" they come under "Discretionary Universal
Exceptions" and can use a hosepipe for most if not all of the banned
activies but it doesn't say where they can use a hosepipe. So one
assumes they can use one anywhere...

Also under the "Discretionary Universal Exceptions":

"* Cleaning a private motor vehicle using specific low water use
apparatus such as pressure washers;

* Watering food crops at domestic premises or private allotments using a
hosepipe;

--
Cheers
Dave.