Dewatering Services
Service Offered
Dewatering Solutions for Mining and Construction Projects
We work closely with hydrogeologists, dewatering contractors, and project engineers to deliver dewatering bores that enable reliable pump installation, efficient groundwater extraction, and long-term water management.
We translate groundwater models and detailed site assessments into dewatering bores that support safe excavations, stable ground conditions, and uninterrupted operations.
50+ YearS Of Experience
Trusted by clients across WA since 1968, with deep knowledge of local geology and drilling conditions.
Custom-Built & Designed Rigs
Our Australian designed and built rigs are purpose-built to handle WA’s unique terrain efficiently and safely.
Family-Owned & Operated
Third-generation business built on integrity, long-term relationships, and hands-on service.
Strict Safety & Reliability
We maintain strict safety standards and deliver reliable results, no matter how remote or complex the site.
Dewatering Drilling Capabilities
Precision Dewatering Bore Construction
Egan Drilling specialises in drilling dewatering bores for pump installation and groundwater control, supporting temporary and permanent dewatering across mining and construction projects.
Our multipurpose drilling rigs are capable of installing dewatering bores up to 18 inches in diameter, ensuring compatibility with a wide range of submersible and line-shaft pump systems and project-specific flow requirements.
Multipurpose Drilling Methods for Variable Ground Conditions
We select drilling methods based on site geology, groundwater conditions, bore design, and hydrogeological recommendations.
Our drilling methods include:
- Reverse circulation (RC) drilling
- Mud rotary drilling
- Conventional air drilling
- Down-the-hole (DTH / DHH) drilling
This approach ensures bore stability, optimal yields, and long-term performance in complex ground conditions on WA mine sites.
Monitoring Bore Installation and Pump Testing
We drill monitoring bores forgroundwater level measurement, pressure monitoring, and system optimisation during dewatering operations.
We also conduct pump testing to verify flow rates, drawdown, and system efficiency, ensuring each installation performs as designed and integrates effectively with contractor-led dewatering systems.
Mining
MiNE Dewatering Drilling Services
Mine Site Dewatering Infrastructure
Egan Drilling delivers dewatering drilling services for open pit and underground mining operations nationally, supporting groundwater control programs for junior, mid-tier, and major mining companies.
We drill dewatering bores that:
- Lower groundwater levels around mine excavations
- Reduce inflows and seepage into pits
- Improve ground stability and operational safety
- Enable efficient pump installation and reliable long-term performance
We drill monitoring bores for groundwater level measurement, pressure monitoring, and system optimisation during dewatering operations.
We also conduct pump testing to verify flow rates, drawdown, and system efficiency, ensuring each installation performs as designed and integrates effectively with contractor-led dewatering systems.
Pit Dewatering and Deep Well Systems
Our team drills deep well dewatering bores strategically positioned around mine pits and operational areas, providing superior groundwater control compared to traditional sump pumping methods. By managing groundwater before it enters excavations, our mine dewatering solutions support reduced water handling costs, improved production efficiency, and safer working conditions.
Compact Drill Pad Operations
We specialise in operating on compact drill pads, minimising environmental disturbance while maintaining high drilling accuracy in confined mine sites and active operations.
Construction
Construction Dewatering Drilling Services
Egan Drilling also provides dewatering drilling services for construction and civil infrastructure projects throughout Perth and regional WA.
Our construction dewatering services support:
- Basement and foundation dewatering
- Underground car parks and deep excavations
- Roads, bridges, tunnels, and utility corridors
- Temporary and permanent groundwater control systems
We drill bores for wellpoint systems and deep well installations, ensuring compatibility with engineer-specified pumping equipment and construction timelines.
Our Advantage
Why Choose Egan Drilling for Dewatering Projects
Specialist Water Well Expertise
Our drillers and supervisors hold Class 1, Class 2, and Class 3 Water Well Licences, demonstrating technical expertise in groundwater drilling and dewatering applications across Perth and regional WA.
Proven Collaboration with Hydrogeologists and Dewatering Contractors
We collaborate with hydrogeologists, dewatering contractors, and project engineers to ensure bore placement, drilling methods, and construction standards align with project objectives and groundwater management strategies.
Reliable Infrastructure for Groundwater Control
Egan Drilling delivers accurate and dependable dewatering bore infrastructure, enabling effective groundwater control, reducing project risk, and supporting safe, efficient mining and construction.
Learn More
Dewatering FAQs
How much does dewatering cost?
Costs vary based on project-specific factors, including bore depth and diameter, number of bores required, ground conditions, site access, and drilling method selection (RC, mud rotary, air, or DTH).
We work directly with your hydrogeologist and dewatering contractor during design to optimise bore placement and specifications, ensuring cost-effective solutions.
For an accurate project quote, contact us with your hydrogeological assessment. We are happy to answer any questions you may have.
Do I need permits for dewatering in Western Australia?
Yes, regulatory approvals from the Department of Water and Environmental Regulation (DWER) are required in WA. Your hydrogeologist or environmental consultant typically handles permit submissions.
How long does dewatering bore installation take?
Installation timeframes depend on bore depth, ground conditions, and program size.
Typical timeframes per bore:
- Shallow bores (5–15m): 1–2 days
- Medium depth (15–40m): 2–4 days
- Deep bores (40–100m+): 4–7+ days
For mining projects requiring multiple bores, Egan Drilling can mobilise multiple rigs to streamline timelines and meet critical schedules.
Contact Egan Drilling during your hydrogeological assessment phase for realistic timeframes based on your bore design.
What's the difference between wellpoint and deep well dewatering systems?
Wellpoint systems are used for shallow excavations, typically up to 5–7 metres per stage. They suit trenching, basements, and short-term construction works in sandy or gravelly soils.
Deep well systems are designed for deeper excavations, usually from 10 metres to over 100 metres. They’re used on large-scale or long-term projects such as mining and major infrastructure works, where high water volumes must be managed.
Let's discuss your Dewatering project
Contact us today to discuss your project’s unique requirements. Our team of seasoned experts is eager to provide you with tailored Reverse Circulation Drilling solutions and unmatched service quality.