How do I fix a broken pipe in my water sprinkler system?

I assume that your irrigation system is broken and the PVC pipe is leaking. If it's underground, you need space to dig underground where the pipe is broken. You're going to want to get some sharp PVC cutters, and you're going to want to cut where the broken pipe is. And if you go to your home goods store or your local DIY store, what you could do is get yourself the right size couplings and maybe the right size pipe to build or fix that section. You're also going to want to get some PVC glue and some PVC primer. You cut out the section that's broken, and since you've already dug up along the pipe, you'll be able to lift your PVC pipe. Get your new pipe, add some PVC glue, and put the couplings on your pipe. Then just do the exact same thing to the opposite side, where you're going to be actually connecting your new water pipe to the old water pipe. Lastly, you just have to wait for around 30 minutes and allow the glue to cure. Open your water back on and check for leaks before covering up your dug trench. Then you should be good to go!