Reverse Osmosis Water Purification · Nairobi & Nationwide
Pure, contaminant-free water, straight from your kitchen tap.
Book professional reverse osmosis under-sink water purifier installation and stop worrying about what's in your drinking water. Our certified technicians fit multi-stage RO membrane systems — with storage tank and dedicated tap — neatly under your sink, done in one visit.
Image: reverse osmosis purifier installation in progressWhy install one
Everything a bottled-water dispenser does — without the bottles.
Reverse osmosis under-sink water purifiers push tap, tank or borehole water through a semi-permeable membrane that blocks dissolved salts, heavy metals, chlorine and most bacteria — giving Kenyan households bottled-water-quality drinking water on demand, without the weekly delivery cost.
Removes dissolved salts & contaminants
The RO membrane filters out chlorine, sediment, dissolved salts (TDS), heavy metals and most bacteria before water reaches your glass.
Pays for itself
Cut the recurring cost of bottled and dispenser water with one RO system fitted for the long term.
Completely hidden
The membrane unit and storage tank fit inside your existing under-sink cabinet — no counter space lost, no visible units.
Better-tasting everything
Purer water improves the taste of drinking water, tea, coffee and cooking.
Protects your appliances
Removing dissolved hardness minerals reduces limescale build-up in kettles and appliances fed from the purified line.
Best for hard & borehole water
RO is the most effective option for mains tap water, borehole supply, or tank water with high dissolved solids.
Image: TDS water quality test in progressIs your water actually safe to drink?
Why so many Kenyan homes need reverse osmosis, not just a basic filter.
Many Nairobi households rely on a mix of mains tap, borehole and water-tank supply through the week — and each source carries a different risk. Borehole water across much of Kenya tends to run high in dissolved salts and fluoride; stored tank water is prone to sediment and bacterial regrowth; and mains supply can pick up contaminants in ageing distribution pipes. A basic carbon jug or tap filter cannot remove dissolved solids — only a reverse osmosis membrane can.
The installation process
From booking to your first glass of purified water.
Five steps, usually completed in a single visit — book today and most Nairobi homes are fitted within the week.
Image: technician fitting the RO unit under the sinkBook & assess
Book online, by phone or WhatsApp. We review your water source, TDS level, and kitchen layout.
Match the RO system
We recommend a 4, 5, or 6-stage reverse osmosis system based on your water quality.
Fit the unit
A certified plumber connects the pre-filters, RO membrane, storage tank and drain line, then fits your dedicated purified-water tap.
Test & verify
Full pressure test for leaks, plus an output TDS check before we hand over.
Handover & care plan
A quick walkthrough and a membrane and cartridge replacement schedule to keep it performing.
Choose your RO system
Every household's water is different. Match yours to the right reverse osmosis system.
Not sure which stage count you need? Tell us your water source when you book and we'll recommend the right fit before we quote — no guesswork, no upsell.
4-Stage Reverse Osmosis
Entry-level RO purification for clean, low-TDS water from mains tap or tank supply.
- Sediment, carbon & RO membrane filtration
- Storage tank & dedicated tap
- Pre-filters last up to 6 months
5-Stage Reverse Osmosis
Our most popular system for Kenyan households — thorough purification, easy maintenance.
- 99%+ contaminant & TDS reduction
- Ideal for tap, tank & borehole water
- Noticeably improved taste & odour
6-Stage RO with Remineralization
Our most advanced system — full purification plus a mineral stage for balanced, great-tasting water.
- Everything in the 5-stage system
- Best for borehole & very hard water
- Remineralizing filter restores healthy minerals
All packages include supply, fitting, pressure testing, TDS verification and a 12-month workmanship warranty. Request an exact quote for your home →
How reverse osmosis compares
RO vs. carbon filters vs. boiling: what actually removes what.
Reverse osmosis is the only home water treatment method that removes dissolved salts, fluoride and heavy metals from Kenyan tap, tank and borehole water. Boiling only kills bacteria and viruses; carbon filters improve taste and remove chlorine and sediment but cannot touch dissolved solids.
| What it removes | Reverse Osmosis | Carbon Filter | Boiling |
|---|---|---|---|
| Chlorine & odour | Yes | Yes | No |
| Sediment & turbidity | Yes | Yes | No |
| Dissolved salts / TDS | Yes | No | No |
| Fluoride & heavy metals | Yes | No | No |
| Bacteria & viruses | Yes | Limited | Yes |
| Recurring effort | Cartridge swap every 6–24 months | Cartridge swap every 2–3 months | Daily, uses fuel/electricity |
Recent installations
See the work before you book.
Finished reverse osmosis installation
Dedicated purified-water tap
Technician fitting an RO membrane
Glass of purified water
Reverse osmosis storage tankWhere we install
Reverse osmosis under-sink purifier installation across Kenya.
Based in Nairobi and serving 50+ towns nationwide — book from wherever you're supplied by tap, tank or borehole water. Same-week technician visits in Nairobi, Mombasa, Kisumu and surrounding counties.
Image: service area map / coverage graphicHomeowners say
Trusted by households across Kenya.
"The RO system was installed in under an hour and the water tastes completely different. No more buying bottled water every week."
"Our borehole water had a strong taste and high TDS. The reverse osmosis purifier fixed it completely — clean, clear water every day."
"Professional team, explained everything about the RO membrane and tank, and the unit is completely out of sight under the sink. Highly recommend."
Frequently asked
Questions homeowners ask before booking.
Most installations are completed within 1 to 2 hours, provided there's existing plumbing access and room for the storage tank under your kitchen sink. Book today and we can usually schedule a visit within the same week.
Yes. RO units and their compact storage tanks are built to fit standard kitchen cabinets. We assess your sink and cabinet space during booking to confirm the right system size — free of charge.
A carbon filter removes chlorine, odour and sediment. Reverse osmosis adds a fine membrane that also removes dissolved salts (TDS), heavy metals and most bacteria — producing significantly higher-purity water, especially important for borehole or hard water.
Yes. Pre-filter cartridges typically need replacement every 6 to 12 months, and the RO membrane every 12 to 24 months, depending on usage and water quality. We provide a maintenance schedule and can book your replacement service in advance.
Yes. Once installed and maintained on schedule, reverse osmosis purified water is safe for drinking, cooking, and preparing beverages directly from the dedicated purified-water tap.
Yes. We install reverse osmosis under-sink purifiers for borehole water, tank-fed water and mains tap supply across Nairobi and 50+ towns in Kenya — RO is especially effective on borehole water with high dissolved solids.
Cost depends on the number of filtration stages (4, 5 or 6-stage remineralizing) and your existing plumbing setup. Call 0745 426 565 or request a free quote and we'll confirm an exact price for your home before any work begins — no hidden fees.
Modern under-sink RO systems are far more efficient than older designs and direct reject water to your drain, not to waste plumbing. Our technicians can also advise on booster pump options that further reduce reject-water ratios for homes on metered supply.
Yes. Every reverse osmosis under-sink installation from Omidrop Africa comes with a 12-month workmanship warranty, plus an optional maintenance plan covering scheduled cartridge and membrane replacement.
Ready for pure water at your tap?
Book your reverse osmosis under-sink water purifier installation today. Certified technicians, same-week fitting, service across Kenya.
Free quote · No obligation · Same-week installation slots