Know the ground before you build on it.
Boreholes, SPT, DCP and trial pits that turn unknown ground into evidence your engineers can design on, across Unguja, Pemba and mainland Tanzania.
Find water. Prove it. Deliver it.
Deep boreholes, pump testing, tank towers and complete supply, proven for ministries, agencies and private clients.
Survey to commissioning, owned end to end.
A Tanzanian team with field-proven rigs and the engineering to carry a project from first site visit to final report.
Why clients trust us
Registered, engineer-led, and equipped to deliver.
- 2021
- Established
- 24+
- Projects delivered
- 14
- Drillers on the team
- 4
- Qualified engineers
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Registered & licensed
Cert. Z0000123072
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Engineer-led
Qualified engineers sign off
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Own drilling rigs
XY-2 & XY-4 owned fleet
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Public & private
Ministries to developers
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Islands & mainland
Unguja · Pemba · Tanzania
Who we are
We sell confidence before construction begins.
Binsalim Geoservices is a Tanzanian-owned engineering and geoscience firm. We help clients understand what is beneath the ground before they commit money above it, delivering geotechnical investigation, water-well drilling, environmental and survey services with experienced staff and our own equipment, across the islands and the mainland.
- Owned rigs, mobilised fast.
- Engineers interpret every result.
- Documented, defensible reports.
- Islands and mainland coverage.
Established 2021 · Kiembe Samaki, Zanzibar
Reg. Z0000123072 · Unguja · Pemba · Mainland Tanzania
Our services
What we solve, beneath the surface.
Seven disciplines, one accountable team. Every service answers a question your project cannot afford to guess.
Geotechnical Investigation
Know exactly what is beneath your site before you commit to a foundation design.
Learn moreWater Well Drilling
Secure a proven, documented water supply, from siting to pump, tank and tower.
Learn moreEnvironmental Services
Clear regulatory approval and keep your project compliant and on schedule.
Learn moreEngineering Design
Carry a project from concept to commissioning with one accountable team.
Learn moreLaboratory Testing
Verify ground and materials with traceable results your designers can trust.
Learn moreSite Rehabilitation
Close out a site responsibly and hand it back clean and compliant.
Learn moreLogistics & Procurement
Get the right materials to site on time, sourced cost-effectively.
Learn moreExplore all services
Compare the full scope and find the right discipline for your site.
View servicesThe cost of building blind
The most expensive mistakes happen before construction begins.
Most construction risk is hidden in the first few metres of ground. The cheapest place to find a problem is on paper, before the first pour. Investigation turns the unknown into evidence, so the decisions above ground are made on data, not hope.
A few weeks of investigation routinely prevents months of delay, and the most expensive surprises a build can face.
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Foundation failure
Building on unverified ground risks settlement, cracking and costly remedial work later.
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Unexpected ground
Hidden fill, soft layers or rock surprise crews mid-dig and stall the programme.
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Cost overruns
Redesigns and change orders after breaking ground are the most expensive kind.
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Water problems
Unmanaged groundwater floods excavations and undermines what you build above it.
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Design mistakes
Foundations sized on assumptions instead of data are either unsafe or wasteful.
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Construction delays
Every ground surprise on site is days lost and trades left standing idle.
Why Binsalim
Most firms talk capability. We own it.
The difference between subcontracting your risk and keeping it accountable, in one team.
We own our equipment
Rigs, survey kit and support fleet are ours, so programmes hold and quality stays in our hands.
Engineers, not just rigs
Qualified engineers plan the scope, interpret the data and stand behind the report.
Faster mobilisation
Owned fleet and local crews put us on your site in days, not weeks.
Local ground knowledge
Years reading Zanzibar and mainland ground, from coastal sands to coral rock.
One accountable partner
Investigation, drilling, design and supply under one roof and one point of contact.
Field-proven crews
Experienced teams who have delivered for ministries, agencies and developers.
Our rigs, working the ground in Zanzibar
Owned fleetEquipment & capability
Owned rigs. Real capacity.
We run our own drilling rigs, survey kit and support fleet, so programmes hold and quality stays in our hands, from borehole to block.
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XY-2 & XY-4 drilling rigs
Owned · core & water-well drilling
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Manual auger set
Owned · shallow sampling
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Levelling & GPS survey kit
Levelling machines, GPS, hand-held GPS
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Hydrogeological survey gear
Single-channel + water-level meters
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Crane & support fleet
Fuso crane, Mitsubishi Canter, Town Ace
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Block & paver plant
Electric block machines, plate compactor
- 14
- Drillers on the team
- XY-2 / XY-4
- Owned rigs
- 80m
- Max well depth
How we work
From first site visit to final report.
A structured path on every job, so nothing is guessed and nothing falls through.
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01
Consult & scope
We discuss your build, walk the site, then plan boreholes, programme and access.
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02
Field investigation
Owned rigs drill and sample: SPT, DCP, trial pits and resistivity, logged on site.
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03
Testing & analysis
Samples tested through recognised labs; results interpreted by our engineers.
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04
Report & support
A clear, costed report you can build on, with our engineers on hand through delivery.
Project proof
Delivered for ministries, agencies and developers.
Cancer Hospital Blocks
Ministry of Health / Defeat-NCD
Challenge
Establish dependable ground information for proposed healthcare blocks before structural design and construction.
Outcome
Field investigation, sampling and engineering reporting were completed for the project team.
“Binsalim gave us ground data we could actually build on. The borehole logs were clear, the recommendations practical, and the report arrived on time.”
Industries we serve
Ground intelligence, sector by sector.
Government & Public Sector
Ground data ministries and agencies can sign off on.
Public projects demand traceable, defensible data. We deliver factual and interpretive reporting that stands up to scrutiny, on the programme public works run to.
Healthcare
Safe foundations for hospitals and clinics.
Healthcare buildings carry heavy, sensitive loads. We characterise the ground precisely so structures are founded safely, from blocks to specialist facilities.
Hospitality & Tourism
Hotels, resorts and villas, founded right and watered.
Zanzibar's coastal developments face variable ground and water needs. We handle investigation and water-well supply together, so resorts open on time.
Real Estate & Construction
De-risk the build before the first pour.
Developers and contractors rely on us to confirm bearing capacity, settlement and materials early, avoiding costly surprises once construction starts.
Water & Utilities
Reliable groundwater, sourced and supplied.
From siting and drilling to pumps, tank towers and testing, we deliver dependable water supply for agencies, communities and private clients across the islands.
Energy & Infrastructure
Ground intelligence for infrastructure that lasts.
Power, telecoms and transport assets need ground that performs for decades. We investigate, design and procure so infrastructure is built on solid evidence.
From the blog
Field-tested engineering guidance.
What a geotechnical investigation tells your foundation designer
A clear account of the boreholes, samples, field tests and engineering interpretation used to reduce foundation risk before construction.
Read the technical overview
SPT, DCP and MDD: choosing the right soil test for the question
Understand what each method measures, where it is used and why a test programme should follow the proposed structure and site conditions.
Compare testing methods
From groundwater survey to productive water well
The main stages of a borehole project, from siting and drilling to pump testing, storage and a usable water supply system.
Follow the drilling processGood to know
Questions clients ask first.
Straight answers on how we work. Need something specific to your site?
Talk to an engineer-
A geotechnical investigation determines the engineering properties of soil and rock beneath a site, using boreholes, SPT, DCP and trial pits, so structures can be designed on safe, well-understood ground. Binsalim delivers these across Zanzibar and mainland Tanzania.
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We are based at Kiembe Samaki in Zanzibar City and serve all areas of Unguja and Pemba, as well as undertaking projects on mainland Tanzania.
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We drill deep boreholes for ministries, agencies and private clients, including paired 80-metre water wells, and supply the accompanying tank towers, tanks, pumps and fittings as a complete package.
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Yes. Binsalim Geoservices Engineering Co. Ltd is fully certified and registered, incorporated in 2021 under the Companies Act No. 15 of 2013 (Certificate No. Z0000123072).
Start a project
Before you build, understand the ground beneath it.
Tell us about your site and timeline. Our engineers will scope the work and reply with a clear, costed plan.