Your water bill jumped this month and the lawn still has brown patches. Sound familiar? In Central Texas, along the I-35 corridor between Austin and San Antonio, a sprinkler system that wastes water is one of the most common reasons your bill climbs in summer. The good news is that most waste leaves clues you can see. Once you know what to look for, you can catch the problem early and stop pouring money onto the driveway.
Here are ten signs your irrigation system is wasting water, plus a simple check you can do this weekend.
Why is my water bill so high?
A high water bill in summer almost always means your sprinklers are losing water somewhere you can’t feel. Our heat is brutal, so systems run longer and any small leak or misaimed head gets multiplied every single cycle. Add hard water that leaves scale on the heads and clay soil that sheds water instead of soaking it up, and a few minor issues turn into gallons wasted every week. The bill is often the first place you notice it, but the yard has been telling you for a while.
The ten signs to watch for
1. Misting or fogging heads
If a head throws a fine mist instead of clean droplets, your water pressure is too high. That mist drifts off in the wind and evaporates in the Texas heat before it ever reaches the grass. You paid for that water and the lawn never drank it. A pressure-regulating head or a lower supply pressure fixes it.
2. Runoff onto the sidewalk or street
Water trickling down the curb is water you are literally sending to the gutter. Central Texas clay soil soaks in slowly, so a long run time floods the surface and the extra runs off. If you see a stream heading for the storm drain, the soil is full and the sprinkler is still going.
3. Overspray on hard surfaces
Watch a cycle and see where the spray actually lands. If heads are watering the driveway, the fence, or the side of the house, that water does nothing for your grass. Overspray is one of the easiest fixes, since it usually just needs the nozzle turned or the arc adjusted.
4. Sunken or tilted heads
A head that sits too low or leans sideways sprays into the turf or off at a bad angle. Mowers, foot traffic, and shifting clay soil knock heads out of place over time. When a head disappears below the grass line, it waters a two-foot circle around itself and leaves the rest of the zone dry.
5. Mixed head types in one zone
Rotor heads and fixed spray heads put out water at very different rates. If they share a zone, you either drown the spray areas or starve the rotor areas, because one run time can’t serve both. This is a common problem in systems that got patched over the years, and it wastes water on every cycle.
6. Visible leaks or geysers
A head that shoots a geyser or a soggy spot that never dries points to a broken line or a cracked fitting underground. These leaks can waste more water than the rest of the system combined, and they often run silently at night when nobody sees them. If one patch of yard is always wet, dig a little and look.
7. Watering during or right after rain
If your system runs in the rain, it has no working rain sensor, or the sensor has failed. Central Texas gets sudden downpours, and watering a lawn that just got soaked is pure waste. A simple rain sensor or a smart controller pauses the cycle when the ground is already wet.
8. A schedule with run times that are too long
Long run times on clay soil cause runoff, and daytime watering loses much of the water to evaporation. Watering deeply but less often, early in the morning, gets more water into the root zone with less waste. Many wasteful systems are running the same schedule they were set to years ago.
9. Clogged or blocked heads
Hard-water scale, dirt, and grass clippings clog nozzles and choke the spray pattern. A blocked head puts out a weak, uneven stream, so you crank up the run time to compensate and waste water everywhere else. Grass, mulch, or a new shrub growing in front of a head blocks the pattern too.
10. Brown spots from uneven coverage
Dry patches next to soggy ones mean your coverage is off. Instead of fixing the real cause, most folks just water longer, which floods the healthy areas to nurse the dry ones. Good sprinkler design overlaps the spray so every part of the zone gets the same amount, which uses less water overall.
How do I check my sprinklers for waste?
Run each zone one at a time in daylight and watch it work, because you can’t spot most of these problems from the couch at 4 a.m. when the system usually runs. Walk the yard while a zone is on and look for misting, overspray on hard surfaces, tilted heads, and water heading for the curb. Then do the simple cup test: set a few identical cups or tuna cans around a zone, run it for fifteen minutes, and measure the water in each. If the amounts are all over the place, your coverage is uneven and you are wasting water in the wet spots. After the cycle stops, check for any patch that stays soggy, since that often means a leak.
For a deeper walkthrough, Texas A&M AgriLife runs a helpful Water University irrigation guide built for our climate, and EPA WaterSense has plain-language landscaping tips. The Irrigation Association also keeps consumer resources worth a look.
Can fixing these save real money?
Yes, and often more than people expect. Runoff, leaks, and a bad schedule are the three biggest money losers, and all three are fixable. Cutting overspray and setting a smart early-morning schedule keeps water in the root zone instead of on the pavement, so the lawn gets healthier while the bill drops. A single hidden leak fixed can pay for the service call by itself.
One thing to know before you start: Texas requires a TCEQ-licensed irrigator for most irrigation repairs and any new install. You can clean a clogged head or turn a nozzle yourself, but for line leaks, valve work, or a system redesign, hire a licensed pro. Doing it right the first time saves water and avoids code trouble.
Where Corral Bros comes in
We work the I-35 corridor between Austin and San Antonio every week, and we know how Central Texas heat, watering restrictions, and clay soil beat up a sprinkler system. Our irrigation service tunes heads, fixes leaks, and dials in a schedule that fits your yard and your city’s rules. Pair that with regular lawn maintenance and your grass stays green on less water, not more. If you are near town, see what we cover in Austin.
Ready to stop watering the driveway? Request a free quote or call us at (737) 404-9343 and we’ll walk your system with you, find the waste, and get it fixed.