Water, energy, mining, infrastructure and the ground beneath them all.
Since 2017, we have delivered studies, designs and construction for utilities, energy developers, mines, oil companies and development partners, from Kampala and Lusaka across East, Central and Southern Africa.
Technical Studies
Know the ground before you commit capital.
- Hydrogeology & groundwater modelling
- Geophysics: VES, ERT, MASW, GPR
- Geotechnical & survey
Engineering Design
Designs built on real site data.
- Water supply & treatment
- Solar PV & solar pumping
- Transmission & substation support
Construction Services
Built by the team that designed it.
- Borehole drilling & rehabilitation
- Pipelines & pump stations
- Supervision & QA
Environmental & Social
Approvals that satisfy both the regulator and the lender.
- Full ESIAs (NEMA, ZEMA)
- In-house specialist baselines
- Audits & monitoring
Climate Resilience
Planning water and land for the climate ahead.
- Catchment & IWRM plans
- Land cover change analysis
- Nature-based solutions
Know the ground before you commit capital.
We plan, collect and interpret the field and desk studies that reduce risk at concept, feasibility and bankability stage, from a single borehole to a 330 kV transmission corridor. Our specialists are in-house, so findings go straight into design.
- Hydrogeological surveys, drilling, test pumping & modelling
- Geophysics: VES, ERT, seismic refraction, MASW, GPR, logging
- Geotechnical investigations & slope stability
- GIS, remote sensing & drone mapping
See all 8 capabilities
- Hydrogeological surveys, borehole drilling, test pumping and groundwater modelling
- Surface water hydrology, hydraulic modelling and flood risk assessment
- Geophysical surveys: electrical resistivity (VES, ERT), seismic refraction and MASW, GPR, and downhole logging
- Geotechnical investigations: drilling, sampling, laboratory testing and slope stability
- Land, topographic and cadastral surveys, and drone mapping
- GIS, remote sensing, spatial analytics and mobile field data systems
- Groundwater and water quality monitoring networks, including real-time satellite telemetry
- Feasibility studies for water, energy and mining projects
Makuutu Bankable Feasibility Study: Hydrogeology Programme
Hydrogeology programme delivered as part of the rare earth mine's Bankable Feasibility Study.
Every survey starts with the landscape.
Drone imagery from fieldwork near Orom, northern Uganda. Reading terrain, drainage and land use from the air shapes where the ground surveys go.
Designs built on real site data.
We turn study findings into designs that can be priced, permitted and built. Every assumption is tested against measured site conditions, and one team stays accountable from first calculation to handover.
- Water supply: boreholes, mains, reservoirs & networks
- Solar PV, solar pumping & grid integration
- Transmission routing & substation design support
- BoQs, specifications & owner's engineer services
See all 9 capabilities
- Water supply systems: production boreholes, pumping mains, reservoirs, elevated tanks and distribution networks
- Solar-powered pumping and irrigation systems
- Water treatment and sanitation systems
- Drainage, stormwater and flood protection works
- Utility-scale and commercial solar PV design, and grid integration studies
- Transmission line routing and substation design support
- Roads, haul roads, foundations, retaining structures and site civil works
- Mine water management and dewatering systems
- Bills of quantities, specifications, tender documents and owner's engineer services
Mbale Industrial Park Water & Sewage Masterplan
Preliminary feasibility studies and designs for a 5,000 m³/day water supply and 5,000 m³/day sewage system, followed by geotechnical, topographic and hydrological assessment.
Built by the team that designed it.
Our own crews and equipment build, install and commission, and we supervise works for clients who build with other contractors. HSE management, quality control and as-built records are standard on every contract.
- Borehole drilling, construction & rehabilitation
- Pipelines, pump stations & storage tanks
- Earthworks, trenching, concrete & structures
- Supervision, QA & contract administration
See all 8 capabilities
- Borehole drilling, construction and rehabilitation, and monitoring well installation
- Pipelines, pump stations, storage tanks and complete water supply schemes
- Solar pumping installation, testing and commissioning
- Earthworks, trenching, concrete and structural works, drainage and culverts
- Water treatment plant installation
- Downhole camera inspection and borehole diagnostics
- Construction supervision, quality assurance and contract administration
- Plant and equipment hire, with or without operators
Groundwater Monitoring Network, Kingfisher Oilfield
Drilling of six groundwater monitoring boreholes across the Kingfisher Oil Field Development Area.
Our own fleet, on site when you need it.
From Lusaka, Optimum Earth Engineering Ltd supplies plant, haulage and site equipment to mining, energy and infrastructure projects, with or without operators. The same machines support our own construction work, so they are maintained to our HSE standards.
- Tipper trucks & haulage
- Backhoe loaders & excavators
- Drilling & test pumping equipment
- Operated or dry hire
Approvals that satisfy both the regulator and the lender.
We take projects through the full compliance cycle, from screening to closure. Hydrogeology, hydrology and GIS are in-house, so the specialist baselines most ESIAs subcontract are done by the team that writes the assessment.
- Full ESIAs & environmental impact statements
- Specialist baselines: water, soils, air, biodiversity
- Stakeholder engagement & grievance mechanisms
- Compliance audits & monitoring programmes
See all 7 capabilities
- Screening, scoping and project briefs
- Full ESIAs and environmental impact statements
- Specialist baselines: groundwater, surface water, water quality, soils, air, noise, biodiversity and social
- Environmental and social management plans, and environmental and social due diligence
- Compliance audits and environmental monitoring programmes
- Stakeholder engagement, public consultation and grievance mechanisms
- Resettlement planning support, mine closure and rehabilitation planning
Pivot Irrigation ESIA
Environmental and Social Impact Assessment and closure works for an irrigation development project.
Planning water and land for the climate ahead.
We help governments, development partners, conservation organisations and agribusiness plan at the scale climate change happens: the catchment, the district, the landscape. Then we turn the evidence into plans and investments people can act on.
- Water resources assessments & IWRM plans
- Land use & land cover change analysis
- Nature-based solutions & catchment management
- Drought & flood monitoring dashboards
See all 9 capabilities
- Water resources assessments and IWRM master plans at catchment, district and basin scale
- Water balance modelling with climate and demand scenarios
- Climate risk and vulnerability assessments for water supply, agriculture and infrastructure
- Climate-smart agriculture: irrigation suitability mapping, solar irrigation, rainwater harvesting, soil and water conservation
- Land use and land cover change analysis from multi-date satellite imagery
- Resource management mapping for forests, wetlands, rangelands and catchments, including encroachment and degradation
- Catchment management plans, ecosystem-based adaptation and nature-based solutions
- Drought and flood monitoring systems and decision-support dashboards
- Technical inputs to climate finance proposals
Imatong Forest Reserve: Land Cover Change & Management Zoning
Ten-year land cover change analysis from 10 m Sentinel-2 imagery over 584,660 ha, with hot spot statistics, erosion and landslide risk, and management zoning for the reserve and its surrounding landscape. Prepared for IUCN and the Ministry of Environment & Forestry.
Six sectors, one field-tested team.
Select a sector to see the projects we have delivered in it.
Oil & gasWater supply, monitoring and ESIA for upstream developments
Mining & quarryingFeasibility hydrogeology, dewatering and borefields
Power & energySolar PV, transmission corridors and site investigation
Utilities & public sectorProduction wells, piped schemes and tank stands
CommunitiesBoreholes and water for schools, hospitals and settlements
Industry & privateWater, treatment and permitting for industrial sites
Not sure which service you need?
Tell us what you're planning. We'll scope it with you.