Borehole Cleaning removes silt, sand, iron deposits and bacterial growth that build up in the hole and around the screen. It is also called borehole flushing or rehabilitation. It can bring back lost flow, but it cannot create water that the ground no longer supplies.
- Describe the change: lower flow, sand, colour, smell or slime.
- Say when the borehole was last cleaned and its depth.
Compare quotes for borehole flushing and cleaning.
Compare Borehole QuotesSigns a Borehole Needs Cleaning
- Flow has dropped although the pump tests fine.
- Sand or silt in tanks and filters.
- Orange, brown or black water, or slimy deposits.
- A rotten egg smell.
- A camera inspection shows clogged slots or a silted bottom.
Cleaning Methods
- Air-lift flushing. Compressed air blows silt and water out of the hole.
- High-pressure jetting. Water jets clean the casing and screen.
- Surging. Water is moved in and out of the formation to loosen fines.
- Chemical treatment. Suitable chemicals break down iron bacteria and mineral scale, then are flushed out.
- Brushing and bailing. Mechanical removal of deposits and sediment.
What Cleaning Cannot Do
- Restore yield lost because the regional water table has dropped.
- Repair collapsed or broken casing.
- Guarantee that yield returns to the original level.
A yield test before and after cleaning shows what was gained.
The Cleaning Process
- Inspect. The pump is pulled and the hole is measured, often with a camera.
- Clean. The chosen methods are applied until the water runs clear.
- Test. A short yield test checks the result.
- Reinstall. The pump is refitted, sometimes at a better depth.
Borehole Cleaning Prices
| Method | Ballpark price |
|---|---|
| Basic cleaning | R3,000 - R10,000 |
| Flushing | R6,000 - R12,000 |
| Air-lift rehabilitation | R8,000 - R20,000 |
| High-pressure jetting | R10,000 - R25,000 |
| Chemical treatment | R3,000 - R15,000 |
| Full rehabilitation, coastal Western Cape | R20,000 - R35,000 |
Ballpark figures, not quotations. Ranges compiled from price guides published by South African contractors, suppliers and quote websites, checked October 2026 and rounded where needed. They are not our prices and no contractor is bound by them. Pump pulling and reinstallation may be priced separately. Confirm whether VAT is included on every quote.
Sources:
- Enviroleg, borehole rehabilitation prices (January 2026)
- Builders in Gauteng, borehole repair prices (November 2025)
- The Handyman Johannesburg, borehole cleaning prices (November 2025)
- Enviroleg, borehole maintenance prices (January 2026)
- WaterQuotes, borehole repairs Johannesburg (September 2026)
What Affects Borehole Cleaning Quotes
- Depth and diameter.
- How badly the hole is clogged.
- Methods and chemicals used.
- Pump removal and refitting.
- Before-and-after testing.
Questions to Ask About Borehole Cleaning
- Which method do you recommend, and why?
- Will you inspect with a camera first?
- Will you yield test before and after?
- Which chemicals will you use, and how are they flushed out?
- What do I pay if flow does not improve?
Compare borehole cleaning contractors through Borehole Installation South Africa.
See borehole drilling if the hole cannot be saved.
Related Services
Borehole Cleaning FAQs
Will cleaning restore my borehole's yield?
It can recover flow lost to clogging, but there is no guarantee. Yield lost to a falling water table will not come back.
How often should a borehole be cleaned?
Only when needed. Iron-rich or sandy boreholes may need it every few years, others rarely.
Is borehole flushing the same as cleaning?
Flushing is one cleaning method. Cleaning can also include jetting, surging and chemical treatment.
Are the chemicals safe?
Contractors should use products suitable for water supply and flush the hole until the water clears. Ask which products they use.
Should I test the water after cleaning?
Yes, especially if you drink it.
Borehole Installation South Africa is a free quote-comparison service. The cleaning is quoted and carried out by independent contractors, and your agreement is with the contractor you appoint. Availability depends on your location and on contractors taking on that kind of job. Before you pay a deposit, get a written quote that lists what is included and excluded, the guarantee terms and the payment terms.
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