When a sprinkler head is broken or a zone won't turn on, the first question is usually about cost.
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Broken sprinkler head replacement is the simplest fix. A standard pop-up head costs $5–15 for the part, and most companies charge $75–150 per head installed, including adjusting the spray pattern and checking the zone pressure. If you have multiple heads on the same zone, the per-head cost drops.Valve issues are more involved. A zone valve replacement typically runs $150–300 including parts and labor. The valve itself is $30–60, but the labor to locate it (many are buried with no marker), dig it up, and swap it takes 1–2 hours. If the valve box is cracked or collapsed, add another $50–100.Line breaks are the most variable. A main line break can cost $200–500+ depending on depth, location, and whether it's under a driveway, sidewalk, or in an open yard. Lateral line breaks (the smaller pipes feeding individual zones) are usually $150–300.
Why San Antonio Is Hard on Sprinkler Systems
The clay soil in most of San Antonio shifts with moisture changes. After a dry summer, the ground contracts and can crack PVC pipes or push fittings apart. Then when the rains come, that same soil swells and puts pressure on connections. This expansion-contraction cycle is the number one cause of underground leaks in this area.The other factor is the water itself. San Antonio's water is hard — high in calcium and mineral content. Over 10–15 years, mineral deposits build up inside valves and on nozzles, reducing flow and causing uneven coverage. Regular maintenance catches this before it becomes a full repair.
When a Repair Becomes a Replacement Conversation
If your system is 15+ years old and you're calling for repairs every season, it may be more cost-effective to replace sections or the whole system rather than continuing to patch aging components. PVC from the early 2000s is reaching the end of its reliable lifespan, especially in San Antonio soil conditions.Moore Irrigation has been diagnosing and repairing sprinkler systems in San Antonio for over 25 years. We'll give you a straight answer about whether a repair makes sense or whether you're better off putting that money toward an upgrade.
