● Clean, safe, reliable water

Safe Water Treatment Solutions

Untreated borehole, municipal, and surface water destroys household health, damages expensive plumbing infrastructure, and disrupts commercial business operations across Kenya.

Trelan Engineers designs, supplies, installs, and commissions high-performance water treatment solutions and custom filtration systems to handle Kenya’s most demanding geological water challenges including high-fluoride water, highly conductive and salty aquifers, or rusty sediment from aging pipe networks

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Why Choose Us for Water Treatment Services

Investing in water purification is a long-term commitment that requires technical precision, exceptional hardware quality, and dependable support.

Custom Solutions

Every filtration layout we design is structured based on a certified laboratory chemical analysis of your specific raw water source.

Premium-Grade Components

We strictly build our plants using industry-leading, global parts such as high-rejection DOW Filmtec membranes, Grundfos high-pressure pumps, and automated Runxin or Clack control valves that ensure structural durability.

Full Regulatory Compliance

Our commercial and industrial installations are fully engineered to meet and surpass KEBS standards (KS EAS 153) for drinking water safety and NEMA statutory regulations for eco-friendly waste discharge.

Fast Turnaround Times

Our mobile installation teams complete residential setups within a single afternoon and deploy large-scale containerized industrial plants within 5 to 14 working days.

Water Quality Problems We Treat

Water quality varies depending on the source, location, and surrounding environment. Our specialized water treatment solutions are designed around the specific chemical, physical, and biological characteristics of your water. By customizing our solution to your specific geological profile, we guarantee long-term  clean and safe water, system efficiency and equipment protection.

We design highly effective treatment systems for common water quality challenges including:

High levels of Total Dissolved Solids (TDS) and dissolved salts severely affect taste, accelerate the corrosion of metal fixtures, and destroy commercial equipment. This is a notorious issue for property owners utilizing groundwater resources. Advanced desalination setups use high-rejection membranes to strip out excessive salt content. These commercial reverse osmosis and brackish-water treatment technologies are explicitly deployed where the raw water requires a drastic reduction in dissolved solids to achieve a refreshing taste profile.

Hard water contains highly elevated levels of dissolved calcium and magnesium ions. When heated or pressurized, these minerals precipitate out of the water, contributing to stubborn limescale formation inside pipes, solar water heaters, industrial boilers, commercial laundry appliances, and household bathroom fixtures. Over time, scaling chokes water flow, spikes energy consumption, and triggers expensive heating element failures. Integrating automatic, ion-exchange water softening systems helps effectively control total hardness, eliminate scale deposits, and extend the lifespan of your plumbing investments.

Elevated fluoride levels occur naturally in groundwater across major parts of Kenya, particularly along the Rift Valley region and sections of the Nairobi Metropolitan area. Prolonged consumption of water high in fluoride leads to debilitating health issues, including dental and skeletal fluorosis, which permanently discolors teeth and weakens bone structures. Where professional laboratory water analysis identifies fluoride as a primary concern, appropriate activated alumina or high-pressure reverse osmosis treatment blocks can be seamlessly incorporated into the filtration system to bring levels safely within permissible limits.

High iron and manganese concentrations are common groundwater anomalies that cause rapid water discoloration, a harsh metallic taste, and dark orange or black staining on laundry, sanitary ware, and tiled surfaces. Furthermore, these minerals foster the growth of iron bacteria, which creates slimes that clog plumbing networks and compromise downstream filtration components. Our specialized treatment trains are meticulously designed around the exact concentration present in your raw water, utilizing catalytic oxidation and manganese greensand filtration to precipitate and strain out these heavy metals.

Sand, silt, clay, mud, and fine suspended particles can affect water clarity, make water visually unappealing, and cause severe abrasive damage to downstream valves, booster pumps, and treatment equipment. High turbidity also shields harmful microorganisms from disinfection processes. Heavy-duty multi-media sediment filters, screen filters, and sand filters are incorporated at the primary water entry point to remove these physical particles before the water undergoes further chemical or membrane refinement.

Where microbiological contamination such as E.coli, coliforms, cysts, or waterborne pathogens—is identified, immediate and foolproof sterilization is mandatory to prevent severe gastrointestinal illnesses. This occurs frequently in unprotected surface water, shallow wells, or municipal lines compromised by structural leaks. To guarantee safety, reliable disinfection systems such as automated high-intensity ultraviolet (UV) treatment or precisely calibrated chemical dosing systems are integrated into the core treatment process to destroy microbial DNA without altering water properties.

Taste and odor issues can result from a wide range of dissolved substances, including decomposing organic matter, industrial run-off, sulfur compounds (giving a rotten-egg smell), or excessive residual chlorine from municipal treatment plants. These aesthetic issues destroy the commercial viability of water vending businesses and make household drinking water unpalatable. High-grade activated carbon blocks and specialized catalytic treatment processes are selectively deployed depending on the root cause identified through initial chemical water analysis.

Specialized Water Treatment Services by Industry

Water-quality requirements vary by application. We develop treatment solutions around the scale, purpose, and operating requirements of the property or facility.

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Residential & Home Systems

Our residential water solutions protects your family’s health and safeguards home infrastructure from hard-water deterioration. We install compact under-sink reverse osmosis units featuring active booster pumps and integrated UV sterilizers that fit neatly inside your kitchen cabinetry to strip away 99.9% of dissolved minerals, fluoride, lead, and microbial pathogens. To eliminate the stubborn white limescale stains ruining your bathroom tiles, clogging showerheads, and corroding solar water heater elements, we install automated central water softening plants directly at your property’s main entry line. For homes relying on municipal tap feeds, our heavy-duty dual-gradient media housings screen out pipe rust, suspended mud, and excessive chemical chlorine tastes before the water ever reaches your storage tanks.

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Commercial & Vending Enterprises

For commercial enterprises and retail hubs, we supply profit-ready equipment packages designed to maximize operational efficiency. We build turnkey 3-in-1 combined water vending stations and coin-operated water ATMs that feature commercial-grade purification engines, raw holding tanks, and stainless steel dispensing taps perfect for supermarkets, clinics, and estate kiosks. Our commercial borehole desalination units are heavily relied upon by real estate developers to reduce high Total Dissolved Solids (TDS) and harsh salinity, successfully transforming bitter well water into refreshing, light, and market-ready drinking water.

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Agricultural & Farm Irrigation

In the agricultural sector, untreated water can quickly poison soils, stunt crop roots, and choke expensive irrigation lines. We engineer specialized iron and manganese removal plants utilizing oxidizing aeration and catalytic media filters to isolate and strain out heavy orange-red iron rust particles before they clog your drip irrigation nozzles. Our agricultural salinity control systems adjust Electrical Conductivity (EC) and pH levels in brackish borehole water, ensuring that your irrigation water supports optimal nutrient absorption for high-yield, year-round farming.

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Institutional & Industrial Plants

For institutions and industrial manufacturing plants, we provide high-capacity water security and strict regulatory compliance. We design and assemble industrial-scale ultrafiltration skids and high-intensity ultraviolet disinfection chambers that neutralize waterborne bacterial counts for schools and hospitals without introducing harmful chemical residues. To help factories and commercial developments fulfill their environmental responsibilities, we install completely closed, odorless sewage and effluent treatment plants (STP/ETP) that process sanitary wastewater and industrial discharge into clean utility water, satisfying the rigid discharge standards enforced by NEMA and the Water Resources Authority (WRA).

Our 4-Step Blueprint For Purity

Our engineering protocol ensures your system works optimally for years.

Scientific Water Analysis

We collect a raw sample directly from your tap, borehole, or river source. Our lab maps out key parameters: Fluoride, Iron, Hardness, TDS, pH, and E.coli counts. 



System Specification Engineering

Based on your chemical lab footprint and required daily volumes (Liters per Hour), we build a tailored configuration proposal. We provide a cost comparison showing a Value Setup and a Premium Automated Setup side-by-side. 

Turnkey Professional Installation

Our field engineers manage plumbing integration, electrical calibrations, high-pressure pump setup, and systemic testing to ensure optimal flow rates.


Maintenance Support

We set you up with a strict service calendar. We supply replacement consumables – including sediment cartridges, carbon media, and high-rejection RO membranes.



How We Determine the Right Water Treatment System

The correct treatment system depends on both the water-quality problem and how the treated water will be used. We assess the source, capacity, operating environment, and required output before specifying the system.

Key assessment requirements

  • Raw water quality
  • Intended use
  • Required daily volume
  • Peak flow rate
  • Required output quality
  • Available space
  • Power availability
  • Automation requirements
  • Operating and maintenance considerations

Ready to improve your water quality?

Talk to our engineering team about your water source, treatment requirements, and the right solution for your property.