Reverse osmosis and multi-stage water treatment systems that turn borehole, municipal or brackish supplies into reliable, high-quality water for buildings, industry and healthcare.
Service Overview
What we deliver
Water quality across East Africa is anything but uniform. Boreholes carry high salinity, hardness, iron or fluoride. Municipal supply can be intermittent and inconsistent. Coastal and island sites contend with brackish sources. Reverse osmosis — properly pre-treated and properly sized — turns these difficult supplies into dependable, high-quality water. TechMEPi Engineering designs and supervises RO and multi-stage water treatment systems for commercial buildings, hotels, hospitals, industry and residential developments. Applications range from whole-building potable supply to process water for kitchens, laundries, boiler feed and manufacturing.
Design starts with the water analysis
No credible treatment design starts from a catalogue. It starts from a laboratory analysis of the raw water: total dissolved solids, hardness, iron and manganese, fluoride, microbiological quality and more. From that analysis we design the complete treatment train — sediment and multimedia filtration, activated carbon, softening or antiscalant dosing to protect the membranes, the RO stage itself, and post-treatment such as remineralisation, pH correction, UV disinfection and residual chlorination where the application demands it. Each stage exists because the analysis says it must, which keeps both capital and running costs honest.
A system, not a box in the corner
An RO plant interacts with everything around it: raw water storage, treated water storage, booster sets, distribution pipework and drainage for the reject stream. We engineer the whole system — recovery rate, reject disposal or reuse, clean-in-place provisions, standby capacity and controls — and coordinate it within the building model in Autodesk Revit. Hydraulic calculations verify flows and pressures from source to the furthest outlet, so the plant performs in the building, not just on the test bench.
Our approach
Raw water analysis review before any equipment is selected
Treatment train design matched to the actual water chemistry
Realistic recovery rates and a planned route for reject water
Storage, boosting and distribution designed as one hydraulic system
Specification and tender documentation for competitive procurement
Installation supervision, commissioning and water quality verification
What we deliver
Deliverables include treatment train design reports, process schematics, plant room layouts, specifications and bills of quantities, independent vendor bid evaluation, site supervision and witnessed commissioning against measured water quality. We also assess existing plants that underperform — fouled membranes, failed pre-treatment and poor recovery are usually design problems wearing an equipment disguise, and they can be engineered out.
Standards and compliance
Potable systems are designed to meet the WHO Guidelines for Drinking-water Quality and applicable national potable water standards, including KEBS requirements in Kenya. For healthcare, hospitality and industrial process applications we design to the tighter quality targets those uses demand. With 18+ years of experience across six countries — including remote island environments where water security is unforgiving — we design treatment plants to be operated, maintained and trusted, not merely installed.
What’s included
Raw water analysis review and treatment train design
Pre-treatment design: filtration, softening, chemical dosing
Installation supervision and witnessed commissioning
Maintenance regime specification at handover
From our installations
System Schematic
Reverse osmosis — raw water to potable
01Raw WaterLab-analysed
02Pre-TreatmentFilter · Soften
03RO MembranesRecovery-rated
04Post-TreatmentRemineralise · UV
05Storage & BoostTo WHO / KEBS
FAQ
Common Questions
Do we actually need reverse osmosis, or is filtration enough?
It depends entirely on the water analysis. Filtration removes suspended solids; it does nothing for dissolved salts, fluoride or hardness. If your analysis shows high total dissolved solids, salinity or fluoride — common in boreholes across the region — RO is the reliable answer. If the problems are turbidity, iron or microbiology, a simpler and cheaper train may suffice. We design from the lab report, not the sales catalogue.
What happens to the reject water?
Every RO plant produces a concentrated reject stream, and it must be planned for at design stage. We set realistic recovery rates for the water chemistry, then engineer the disposal or reuse route — irrigation blending, flushing or lawful discharge — so the reject neither surprises the drainage design nor undermines the economics of the plant.
How much maintenance does an RO plant need?
Routine, predictable maintenance rather than heavy intervention: pre-filter changes, dosing chemical top-ups, membrane clean-in-place cycles and periodic water quality checks. Neglect the pre-treatment, however, and membranes foul quickly and expensively. We design for maintainability — access, isolation, instrumentation and clear operating procedures — and specify the maintenance regime at handover so your team knows exactly what the plant needs and when.
Can RO remove fluoride from borehole water?
Yes. Reverse osmosis is one of the most effective treatments for fluoride, which occurs naturally at elevated levels in many boreholes across the Rift Valley and beyond. The system is designed from your specific analysis — fluoride concentration alongside salinity and hardness — so the treated water meets WHO guideline values with an appropriate safety margin.
