How to Remove Slime from Boreholes in Australia 2

Boreholes across Australia often suffer from a common and persistent problem — slime buildup caused by iron bacteria, biofilms, and mineral deposits. Left untreated, this buildup reduces water flow, affects water quality, and leads to premature equipment failure. The good news is that with the right combination of mechanical cleaning and biodegradable chemical treatments, boreholes can be fully restored to efficient operation.

Understanding Borehole Slime

The “slime” found in bores is usually a gelatinous layer formed by iron-related bacteria (IRB) feeding on dissolved iron. As they oxidize iron, they create sticky deposits that clog screens, pumps, and pipework. Over time, these biofilms trap fine sediments and minerals, compounding the blockage.

This buildup not only reduces yield but can also corrode metal components and affect the taste or clarity of the water.

Step 1: Mechanical Cleaning

Mechanical cleaning removes the bulk of the physical deposits before chemical treatment. Common methods include:

• Bore brushing: Using mechanical or rotary brushes to scrape biofilm and sediment off casing walls and screens.

• Airlifting or hydraulic blowout: Forcing air or water under pressure to lift debris and slime from the bore.

• High-pressure jetting: Using powerful water jets to clean deep into screens and gravel packs, improving aquifer development and flow.

For heavily fouled systems, vacuum systems and surge blocks can also be used to physically remove the thickest buildup.

Step 2: Chemical Cleaning

Once the physical debris is cleared, the bore is treated with biodegradable cleaning agents designed to dissolve and disperse remaining deposits. The most widely used products in Australia include:

• BoreSaver Ultra C – a leading, biodegradable iron bacteria and mineral deposit remover approved for use in potable water systems.

• Eze Eco – an environmentally safe cleaner effective against organic biofilms.

• Multikleen – a general-purpose cleaner for scale, rust, and mineral deposits.

These treatments are typically circulated through the bore for several hours to penetrate and dissolve biofilms and mineral layers before being flushed out. BoreSaver products are formulated to be safe for both stainless steel and submersible pump components, and they comply with international drinking water standards.

Step 3: Preventative Maintenance

After cleaning, routine maintenance is essential. Schedule annual or biannual inspections and light treatments to prevent re-fouling. A proactive approach maintains performance, prolongs pump life, and minimizes costly downtime.

Professional contractors familiar with BoreSaver Ultra C and mechanical redevelopment methods can assess the bore condition and apply the most effective combination of techniques for long-term performance.

Environmental Considerations

Modern bore cleaning practices emphasize eco-friendly solutions. Using biodegradable formulations like BoreSaver ensures minimal environmental impact, protecting both groundwater quality and surrounding ecosystems. Always dispose of waste water according to local regulations.

Summary

Removing slime from boreholes in Australia requires a combined approach:

1. Mechanical cleaning to remove deposits and restore flow.

2. Chemical treatment using biodegradable, potable-safe cleaners such as BoreSaver Ultra C, Eze Eco, or Multikleen.

3. Regular maintenance to prevent recurrence.

For more information on safe and effective bore cleaning solutions, visit BoreSaver.com.au — Australia’s trusted source for iron bacteria removal and borehole rehabilitation.