The answer to 'sprinkler system turning brown' is that a brown lawn is often a sign of an issue with your sprinkler system. This can be caused by a variety of factors, including broken or clogged sprinkler heads, improper watering schedules, or even a deeper issue with the system's wiring or programming.
Some common symptoms of a sprinkler system issue include brown or patchy grass, uneven watering coverage, and low water pressure. To troubleshoot the problem, you can start by inspecting your sprinkler heads for any damage or blockages, and adjusting your watering schedule to ensure the lawn is getting enough (but not too much) water. If the issue persists, it's best to call in a professional landscaper or sprinkler repair technician to diagnose and fix the problem.