Sprinkler Zone Won't Shut Off: Cause, Check, and Cost

Of the two ways a valve can fail (won’t turn on, or won’t turn off), a zone stuck running is the more urgent one. It’s actively wasting water right now, and depending on when it started, it may be running well outside your legally permitted watering hours under Marion County’s current restrictions.

Check this first (right away)

Shut the water off manually at the valve if you can access it. Most valve boxes have a way to close that zone by hand, which stops the waste immediately while you arrange the repair.
Note the time it’s been running and whether it started at its normal scheduled time or came on unexpectedly.
Check whether other zones are affected or just the one. A single stuck zone points to that valve specifically; multiple zones running together when they shouldn’t points more toward a controller wiring or programming fault.
Look at the valve box for standing water or visible debris around the valve, which can hint at what’s jamming it.

What is usually wrong

What you notice	Likely cause	Fix and cost
One zone stuck running, valve visibly jammed with debris	Grit or root hairs holding the valve open	$150 to $350
One zone stuck running, valve appears clean	Torn diaphragm, can’t fully seat	$150 to $350
Valve body cracked or leaking at the box even when off	Valve replacement needed	$200 to $450
Multiple zones running together unexpectedly	Controller or wiring fault, not the valve	See sprinkler timer and controller repair

These sit inside the irrigation valve repair range on the pricing page, on top of the $75 to $150 diagnostic visit.

The local why

Marion County’s sandy soil moves easily around buried valve components, and fine grit working its way into a valve mechanism over years is one of the most common causes of a stuck-open valve here specifically. It’s also worth knowing that a zone stuck running past 8 a.m. under the current St. Johns River Water Management District Phase III order (the schedule covering Ocala and most of the county) means the system is now running outside the legally restricted hours, on top of wasting water, which is one more reason to shut it off manually the moment you notice rather than waiting for a scheduled visit.

When to call

Shut the valve off manually first if you can, then book the repair. This one moves up the priority list on our end too: an actively wasted, potentially out-of-hours zone gets scheduled ahead of a cosmetic issue when the day allows for it.

Where we work

On site across Ocala, Belleview, Dunnellon, Silver Springs Shores, Summerfield, On Top of the World, Marion Oaks, and Reddick. The irrigation valve repair service page covers the full scope, and the irrigation repair cost calculator turns your symptom into a specific estimate.

Frequently Asked Questions

My zone keeps running well past when it should have stopped. What's wrong?

Almost always debris (grit, sand, or root hairs) jamming the valve open, or a torn diaphragm that can't fully seat and seal. Occasionally the controller itself is sending a continuous signal rather than the valve failing mechanically.

What should I do right now while I wait for a repair?

Shut the water off manually at the valve if you're able to access it; most valve boxes have a manual bleed screw or a shutoff. That stops the waste immediately without needing to wait for a scheduled repair visit.

What does this repair cost?

$150 to $350 for a typical valve repair (cleaning a jammed valve or replacing a failed solenoid or diaphragm). $200 to $450 if the valve body itself is cracked or worn out and needs full replacement.

Is this actually urgent, or just annoying?

Urgent. A stuck-open zone wastes water continuously until it's fixed, potentially runs past your legal watering window under Marion County's current restrictions, and can flood a bed or wash out mulch and soil the longer it goes unaddressed.