Sprinklers watering a sidewalk, driveway or street are throwing water that cannot possibly reach a root zone, and if it runs into a gutter, street or storm drain it may also put you in breach of a local water waste ordinance. The causes are a head knocked out of alignment, an arc that has drifted, a nozzle throwing further than the area needs, or a head placed too close to the edge. Most are corrected by adjustment at the head in minutes.
Why it is worth fixing rather than tolerating
- Water on pavement is a total loss. Unlike overwatering turf, none of it does anything for the landscape.
- It is metered and billed in full, every cycle, all season.
- Runoff into a gutter, street or storm drain is specifically what local water waste ordinances address — Gwinnett County’s, for example, addresses water running into the gutter, street, storm drain or an adjacent property. Check with whoever bills you for what applies to your address.
- The area that should have been watered is not being watered, so you get a dry strip along the edge while paying for water landing on concrete.
- Repeated wetting of pavement causes staining and, in freezing weather, an ice hazard on a walkway or drive.
- It is visible to neighbours during any drought response period, which is its own kind of cost.
The causes and their fixes
| Cause | Fix |
|---|---|
| Head physically knocked or tilted | Reset the head upright and to grade |
| Arc adjustment drifted or reset | Re-set the arc; replace the head if the mechanism is worn loose |
| Nozzle throwing further than needed | Change to a nozzle with the correct radius for the area |
| Wrong nozzle pattern for the shape | Fit the appropriate pattern — a corner, strip or half pattern rather than a full circle |
| Head set too close to the edge | Relocate it in from the hardscape, adjusting nozzle radius to match |
| Excess pressure causing drift | Regulate pressure — misted water blows onto pavement even when aimed correctly |
| Rotor stalling mid-arc | Service or replace the rotor; a stalled rotor soaks one spot, often pavement |
| Root growth having tilted the head | Reset on a flexible riser and re-aim |
Want this looked at rather than read about?
Diagnostic-first visits across North Georgia. Call 770.335.8595 or request service — you get an estimate before any work begins.
Adjustment is not always enough
Where the head is simply misaligned, a minute of adjustment solves it. But two situations need more than adjustment, and it is worth knowing which you have before assuming a quick fix.
The first is a head placed too close to the hardscape. If a full-radius head sits a few inches from a driveway, there is no arc setting that both covers the turf and stays off the concrete — the geometry does not allow it. That head needs relocating inward with a nozzle radius chosen to reach the edge from its new position.
The second is pressure. A head at correct alignment that is misting will drift onto pavement regardless, because fine droplets go where the air goes. Reducing the arc just narrows the fog. The actual fix is pressure regulation at the head or the zone, after which the aim starts working again. See why sprinklers mist instead of spraying.
What a proper correction looks like
- Run the zone and watch the whole cycle. Rotors move, so a head that looks fine at one moment may be throwing onto pavement thirty seconds later. Stalling rotors are only visible if you watch them turn.
- Reset any tilted heads to upright and to grade. Alignment cannot be corrected on a head that is leaning.
- Set arcs to the actual planted area. Working around the zone rather than head by head in isolation, so the overlap between heads is preserved.
- Match nozzles to the distances involved. Radius and pattern chosen for the shape being watered, and application rates kept consistent across the zone.
- Confirm head-to-head coverage still holds. Reducing an arc or radius to keep water off pavement can open a dry gap. The zone has to be reassessed as a whole, which is the part a hurried adjustment skips.
- Re-check run times. Once water is landing on turf instead of concrete, effective application goes up and run times usually come down.
Related answers
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Services that fix this
Sprinkler Head Repair
Geysering heads, heads that will not pop up, spray on the driveway and the dry patches they cause.
Read more →Irrigation Maintenance
Spring startup, seasonal adjustment and winterization — the work that stops repairs from happening.
Read more →Irrigation System Inspection
Every zone run, every head watched, every fault written down — before it becomes an expensive repair.
Read more →Where we work
Irrigation Medics repairs irrigation systems across Hall County and the Lake Lanier communities, the Gwinnett corridor through Duluth, Suwanee and Buford, and North Fulton and Forsyth — Johns Creek, Alpharetta, Milton, Roswell and Cumming. Same rates throughout. See the service area.