General   (General discussion, talk about anything.)

I use high pressure lance type of car wash, ie not automatic car wash. I asked this morning, and was told it does recycle.

I believe this, because were the water to go down mains drainage, regulations mandate that a gully trap is required, and it is apparent that there isn't one.

So, I did some online searching. Both types can use recycling, and it is economics driving the change over to recycled car wash water, ie it lowers their water bill.

For various reasons, the recycle rate is not 100%. Recycled water, for example is not suitable for final rinse, but tends to be used for the soap cycle. Removing sufficient soap from used water is just too expensive, either in power, or consumables used.

Wherever mists are generated from water not immediately taken from the mains, Legionella control measures are also needed.

It looks as though the overall picture is quite complex.