Simply hook a garden hose to your tap and run it into your shop or garage through a filter. Run the hose across the rafters or roof until it is above your work bay. Go to the hardware and buy a plastic T piece that steps down to 6mm. Run some clear 6mm hose off that down to a trigger.
Then continue the garden hose across the roof to the other side of the car and repeat the T piece and 6mm hose. You can keep doing this to as many bays as you need. I had it working for 5 bays with 6 triggers. At the last trigger, you just use a plastic L piece instead of the T. Use hose clamps to secure the joins and your done.
Make sure you use good quality garden hose, otherwise over time it ruptures. At the beginning of each day turn the hose on and bingo, clean filtered water at high pressure all day long. Just make sure you turn it off at the end of the day so you don't flood the workshop if a hose busts.
I use this clean water for washing down cars, cleaning windows and most importantly flushing my window prior to installation. Jus keep a soapy bottle handy to wet the adhesive down. Hope this helps

