Irrigation leaks hide in plain sight, because a wet garden is what the system is supposed to produce.
A failed solenoid that never fully closes can run continuously for months. Full detection scope at Leak Detection Pretoria.
Tell us the number of zones and whether the system is timed or manual.
Get an Irrigation Leak QuoteWhere Systems Leak
- Solenoid valves that do not close fully - the classic silent loss, running 24 hours a day.
- Cracked lateral lines - ground movement, root pressure, or a spade.
- Broken sprinkler heads and risers - usually mower damage.
- Failed backflow preventer - a compliance item as well as a leak.
- Perished poly fittings - UV damage on exposed sections.
The Test
Close the irrigation isolating valve and watch the water meter. If the movement stops, the loss is in the irrigation system rather than the house plumbing. That one step separates a garden problem from a building problem in five minutes.
Irrigation Leak Detection Prices in Pretoria
| Job | Indicative range | What moves it |
|---|---|---|
| Irrigation leak detection | R1,200 – R2,800 | Call-out plus first hour. |
| Zone-by-zone pressure testing | R950 – R2,400 | Isolates the failing circuit. |
| Solenoid valve replacement | R650 – R1,800 each | The most common single fault. |
| Lateral line repair | R850 – R2,400 | Shallow buried poly lines. |
| Sprinkler head or riser replacement | R220 – R650 each | Parts and labour. |
| Backflow preventer supply and fit | R1,200 – R3,500 | Also a compliance requirement. |
| Controller replacement | R1,800 – R6,500 | Depending on zone count and features. |
| Full system audit and report | R1,500 – R3,800 | All zones, valves and heads. |
These are indicative market ranges, not a quotation. They are compiled from published South African leak detection and plumbing pricing to give you a starting point for budgeting. They are not the rate card of any company on this platform.
Irrigation leaks are ereated by the City as consumption rather than an undetected leak, so there is no recovering the wasted water from the municipal account.
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Frequently Asked Questions
How do I know if the leak is in my irrigation?
Close the irrigation isolating valve and watch the meter. If the movement stops, the loss is in the irrigation. If it continues, it is in the house plumbing or the buried mains.
Why does one zone stay wet after the cycle ends?
Almost always a solenoid valve that is not seating properly, usually from grit or a perished diaphragm. It is a cheap part and a large ongoing water loss.
Can I recover the water an irrigation leak wasted?
No. Water lost through a pool, pond or irrigation system is treated as consumption, not as an undetected leak.
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