Is Your Sprinkler Irrigation System Ready for Winter? Part 1.... With cooler weather on the way this is the perfect time to have your sprinkler irrigation system inspected and tuned-up. Sprinkler irrigation systems require maintenance, and a thorough checkup can protect your investment by catching any problems early. Not only will you save money on timely repairs, your water bill won’t increase because of faulty equipment. You also don’t want to be subject to water violation fines if your irrigation system is malfunctioning.