Integrated Geothermal Water Treatment Systems for Off-Grid and Industrial Applications

At Geotek Water Solutions, we are pioneering a new model of sustainable water infrastructure: integrating water access and clean energy into one system. Our innovation uses a single ground water wells (boreholes) not only to extract groundwater, but also to harness low-enthalpy geothermal energy (LEGE)—providing reliable water treatment powered by renewable thermal energy. This approach is designed to address the dual challenges of energy cost and water quality in off-grid, agricultural, and industrial settings.

The Problem We Solve

Water treatment processes such as pumping, filtration, and disinfection are energy-intensive, often consuming up to 50% of a water system’s operating costs. In off-grid or rural areas, these systems typically rely on diesel generators, leading to high fuel expenses, frequent maintenance, and significant carbon emissions. Even where electricity is available, costs and reliability remain a barrier to sustainable water delivery.

Our Solution

We offer a dual-purpose geothermal water treatment system that combines:

  • Groundwater access via borehole
  • Thermal energy capture through a geothermal loop system
  • Solar-electric support for pumping and distribution
  • Real-time IoT-based monitoring

Our system turns each borehole into a clean water and clean energy asset—minimizing external energy needs while maximizing operational uptime, water quality, and climate resilience.

Our integrated mobile app provides real-time data visualization, empowering communities to manage their water systems and report issues proactively.

Technology Architecture

Borehole & Groundwater System

  • Drilled to 60–120 meters depending on aquifer depth
  • High-grade HDPE casing and screen for groundwater extraction
  • Integrated with multi-stage filtration or advanced treatment (UV or RO)

Geothermal Loop Integration

  • U-bend HDPE geothermal pipes installed within the borehole
  • Thermally enhanced grout to ensure effective ground heat transfer
  • Closed-loop system circulates fluid to draw stable underground temperatures (~25–30°C)

Open-Source Commitment

Our moni operates on open source principles, promoting transparency, collaboration, and accessibility. We invite individuals, organizations, and developers to join us in this open journey

Water Treatment Efficiency via LEGE

  • Geothermal heat pre-conditions the water or stabilizes system temperature
  • Reduces energy needed for disinfection and filtration
  • Extends pump and membrane lifespan by minimizing thermal shock

Solar-Geothermal Hybrid Power

  • 1.5–3kW solar PV array with inverter and battery storage
  • Supports pumping, monitoring, and controller units
  • Enables full off-grid operation, year-round

Smart Monitoring: The Geotek Monitor

Our proprietary Geotek Monitor provides real-time insights:

  • Groundwater level and flow tracking
  • Pump power consumption and performance
  • System temperature and heat efficiency
  • Predictive maintenance alerts via cloud dashboard

This data ensures high system reliability, low downtime, and informed decision-making for farm managers, facility operators, or utility owners.

Modular and Scalable Design

The system is modular and designed for rapid deployment:

  • Can be containerized or mounted in-field
  • Scales from smallholder farms to industrial plants
  • Suitable for agriculture, manufacturing, health facilities, and rural water stations
  • Reduces water treatment energy costs by up to 50%
  • Lowers carbon emissions significantly

Use Case: Green Eden Farms, Jos, Nigeria

Green Eden Farms, one of the largest greenhouse operations in North Central Nigeria, required a sustainable irrigation solution. Facing high diesel costs and seasonal disruptions, the farm partnered with us to deploy a geothermal-powered water system tailored to its needs.

Results:

  • 70% reduction in diesel fuel use for irrigation
  • 35% increase in crop yield due to consistent, treated water supply
  • System commissioned in 6 weeks, with full off-grid operation
  • Real-time data enabled better water scheduling and equipment maintenance

This project demonstrates the power of integrating geothermal energy into agricultural water systems, and serves as a model for replication across Africa.

Get In Touch