In a message dated 5/8/99 10:32:55 AM Pacific Daylight Time, cmayeaux@traverse.com writes: > How does one measure the psi, coming out of the outside faucet? I have my > own well. Just curious. Its a $10 tool that has a gauge. You screw it on the hose bib. Since PSI can change between the front and back of the house ....its good to check it in both locations. Also you need to know more than Pressure for irrigation....you need to know flow. For that you just turn on the facet with a 5 gal bucket and see how many of them fill up in a set period of time and figure out how many gal per hour. You can have good pressure and lousy water flow. Both are important. It tells you how many lines and how many heads per line etc are possible. Taree Taree