Who are we

Brunnenbau Conrad SL, is a leading Borehole Drilling and Civil Construction Company in Sierra Leone

Brunnenbau Conrad SL, is a leading Borehole Drilling and Civil Construction Company in Sierra Leone having executed projects for SALWACO, UNDP, UNFPA, ADB, Ministry of Health and Sanitation and lot of Private individual around the country, Headquartered in Freetown with a sister company resident in Germany as parent company. BBC is a company liable by shares that conducts business in countries around the globe. It begins activities over twenty years in Europe and some Africa Countries including neighbouring Guinea.

Our associate companies are Global Comprehensive Ecological Solutions (GCES) based in Israel with their profile in water treatment and electrical engineering, and Lorentz Solar Factory also of Germany.

Our Mission

Our mission is to pay close attention to the fine details while delivering cost-effective services to our clients on a long term basis. The client relationships that we have developed over the years are as important to us as the jobs. From start to finish, every project will receive our utmost care and attention.

Our Commitment

Our mission is to pay close attention to the fine details while delivering cost-effective services to our clients on a long term basis. The Integrity quality and innovation are the characteristics that distinguish BBC as a leading Borehole Drilling, Solar and General Procurement Construction Company. Our goal is to provide a higher level of service than is found with any other company in the construction and drilling industries and not merely to get only the turnover, but also to get total satisfaction of our clients.

Our Approach

We consistently bring superior craftsmanship and experts to every project whether constructing a residential or drilling of borehole structure for a client or a manufacturing facility for local company. Our successful construction and drill work approach is based on aggressive subcontractor administration, accurate control and low overhead. We employ only qualified subcontractors who share our goal in creating a quality cost competitive project.

Our Strategy

Because scheduling and budget concerns are important to us, we assign a team of experts to every project from the earliest design and pre-construction phases through post-construction clean up. Our Company’s goal is to create distinctive design ideas and develop streamlined and methods of construction that suit each project specifically. We also provide our clients with reliable and expedient information throughout our works, ensuring well-informed decision making that ultimately enhances the quality of our final product. The direction we provide is based on a thorough knowledge of the industry and our clients’ specific needs.


Working with our partners, we bring a number of Lifestraw water technologies, products and programs that are driven by evidence. We take a comprehensive approach to safe water programs – it’s not just about access to safe water, it is giving people the tools to use it. It is not just about providing a water filter or purifier, it is about providing a safe water tool, training on how to use it, education on why safe water and sanitation is important and ongoing maintenance and support to ensure that a program has impact.

Water Solutions

Water Solutions
LifeStraw Go
Water Solutions
LifeStraw Family 1.0
Water Solutions
LifeStraw Community
Water Solutions
LifeStraw Family 2.0

Schools, Clinics & Community Centers

LifeStraw implements programs delivering safe water and hygiene and sanitation education


LifeStraw also oversees programs delivering safe water at a household level

Disaster Response

LifeStraw is active in humanitarian disasters, working with partners to rapidly deliver long-term safe water solutions in disaster areas


PV Modules

PV Modules are the power source for your solar water pumping system. LORENTZ systems are very flexible allowing a wide range of PV Module types and sizes to be utilized.

PV Modules

Designed for off grid use

We offer our own range of competitively priced modules in size ranges that fit the off-grid environment perfectly. The LC ranges of modules are used in a wide range of applications including water pumping, water purification systems and anywhere that a reliable, robust PV module is required.

Built to last

The LC Series modules are built with sturdy aluminium frames, advanced EVA encapsulation and triple layer backsheets to meet the most stringent safety requirements.

Tested and easy to size

By buying LORENTZ modules you know they are good quality and are tested with LORENTZ solar pumping systems which reduce project risk. The module specifications are included as standard in our COMPASS solar planning software and kept up to date.

And all the features you would expect

LORENTZ 20 year performance guarantee, a high conversion efficiency, manufactured in an ISO 9001:2000 certified factory, meet all European approvals under our license and include reliable bypass diodes to prevent overheating and minimise power loss from shading.

PV Modules

Ps2 Solar Water Pumping System

PS2 is the latest generation of high efficiency solar water pumping systems. It is an integrated solar water pumping system for small to medium sized applications. Whether your need is to reduce operational costs, improve water security, or be more sustainable, PS2 provides the right solution.

PS2 covers a wide power range from 150W to 4kW with a wide range of pumps for submersible, surface or swimming pool applications

Designed for Solar Water Pumping

PS2 has been designed from the first white board sketches to be a solar pumping system. The system has been designed and built by an engineering team who only focus on solar water pumping. This experience means they design, test and build systems where operation in the harshest, most remote environments is normal.

PS2 is designed to be field serviceable, the pump unit components and electronics are modular to allow for cost effective and fast replacement.

Ps2 Solar Water Pumping System

Ultimate Efficiency

All PS2 systems use a unique DC brushless and sensorless motor named ECDRIVE. This motor is a perfect match for solar applications as it has a very high efficiency across its whole operating range. This is very different to a small AC motor where maximum efficiency is only achieved in a narrow operating band.

Solar power is always changing through the day and depending on weather conditions. The LORENTZ ECDRIVE and PS2 have an average daily efficiency of above 90 %, most of our competitors achieve 65 % with clear blue skies and much less when there is cloud cover.

The Complete Solution

PS2 is designed to be a complete solar water pumping system comprising of a specialized pump controller and carefully matched pumps. PS2 has eight sensor inputs that allow analogue and digital sensors to be connected. This combination of sensors with the powerful inbuilt software applications allows for full pump control and water specific applications..

The system also has an inbuilt Sun Sensor which measures the available irradiation and then makes decisions of what to do based on the available power. The SunSensor also avoids unnecessary stop start cycles which increase pump wear.


The system is configured on site using PumpScanner, an Android™ based App that the installer uses. Common configuration is done with three clicks and there is full access to configure system behavior based on additional sensor inputs.

The PS2 constantly records operational data and provides access to rich information for both customers and technicians.

The PS2 can also be connected to our pump MANAGER managed service. This is a simple, cloud delivered, pay monthly service that takes away the complexity of remote monitoring and management. One low fee means that you can see exactly what the system is doing, make changes to settings and receive alerts irrespective of location.

Solar Pump Accessories

To complete your LORENTZ system we offer a wide range of compatible probes, sensors, solar power connection equipment, racking and PV modules. This enables a single source of tested, ready to integrate components to give you a complete solution.


A range of sensors that connect to the LORENTZ pump controllers to allow measurement of pressures, water levels, water detection and irradiation levels. We also have a range of water meters which can also be connected to the controller for accurate flow measurement. The controller records and can act on the information from the sensors.

Power connection equipment

Range of DC disconnects, combiners and lightning protection equipment to ensure the DC connections from the PV array are made in a safe and code compliant way..

Solar Pump Accessories

Smart Solution Components

The SmartSolution components turn the PSk2 system into a  hybrid pumping system. The SmartPSUk2 takes a DC and AC feed. It monitors the solar power available (DC) and then will blend in AC all managed automatically by your water demands. The SmartStart device combines with the SmartPSU to provide generator start/stop control and provides logic power to the PSk2 during the night.

External Switches

Switches for pressure, water level, float switches for tanks and a SunSwitch to allow external devices to switch on or off depending on the available sun light.

PowerPacks for PS2

We offer a range of PowerPacks which provide AC to DC conversion allowing our solar pumps to be powered from the grid or a generator. This can add flexibility in emergency situations or be used to provide 24 hour pumping solutions.

Get in Touch

Contact Info

Brunnenbau Conrad, Ltd
52 Main Motor Road
Wilberforce, Freetown