The Five Things We Find Inside Every Old Water Filter We Replace
15, Jul 2026
Karen and Runda are among Nairobi's most desirable neighbourhoods, with mature gardens, generous plots, and reputations for setting the standard in Kenyan residential living. They also share something less often discussed: significant reliance on boreholes, and the dissolved mineral content that comes with them. Here is what our field team actually finds when we test water in these areas.
There is a quiet assumption that goes with high-end Kenyan addresses: that the water, like everything else in the area, must be cleaner. The data shows that assumption does not hold up consistently.
Karen TDS readings, in our regular testing, sit between 150 and 180 ppm. That is the cleanest range in iClear's internal field data, lower than Naivasha, Kitengela, or Kajiado. But Karen also relies heavily on boreholes, and boreholes carry their own profile of dissolved minerals and elements that municipal supply does not.
Runda is similar. The properties are large, the boreholes deep, and the assumption is that the water arriving in the kitchen tap is fine. In our installations across Runda, we routinely find borehole water with elevated mineral content that benefits significantly from Reverse Osmosis filtration.
Lavington's municipal water tends to be cleaner overall, but even there our field team finds occasional sediment and benefits clear enough that residents installing iClear systems consistently report improvements in taste and visible water quality.
The phrase covers a range of dissolved contaminants that, while not as immediately alarming as fluoride or arsenic, still affect health, appliances, and daily life:
None of these is necessarily visible. The water can look perfectly clear and still carry enough dissolved mineral content to leave visible scale on kettles, dry out skin and hair, and contribute to the slow long-term effects of mineral overconsumption.
The shared lesson across Karen and Runda installations is straightforward. Premium real estate does not exempt a property from Kenya's water reality. Borehole water is borehole water, regardless of the postcode. The geology underneath Karen is the same geology that produces dissolved mineral content elsewhere in the country.
What is different in these areas is that residents are typically more aware of water quality, more informed about purification, and more likely to take action once they understand what their borehole is actually delivering. iClear's customer base in Karen and Runda skews toward families and households who have already done some research before they call.
Most Karen and Runda installations are the iClear Standard for typical households or the iClear Premier for larger families with eight or more occupants. Both are full Reverse Osmosis systems, KEBS-certified, and designed for the kind of dissolved mineral content commonly found in the area's boreholes. The iClear Desktop is also popular as a secondary unit in studies, kitchens, or guest houses on the same property.
Every iClear installation in Karen and Runda includes free professional installation, with iClear's technicians handling integration with existing borehole pumps, pressure systems, and storage configurations. No other water purifier brand in Kenya currently offers this level of installation support as standard.
A premium address does not deliver premium water. Karen and Runda households increasingly recognise this, which is why iClear's installation base in these areas continues to grow. If you live in either area and rely on borehole water, the question is not whether your water needs filtration. The question is what level of RO purification matches your household size.
Bring iClear purification to your Karen or Runda home.
Free delivery and professional installation in Nairobi and Nakuru. Visit the iClear shop.
Keywords: Karen water Kenya, Runda water Kenya, Lavington water, borehole water Nairobi, water purifier Karen, water purifier Runda, iClear Kenya, Reverse Osmosis Kenya
Water Purification & Treatment Specialists
David Ochieng, a water purification specialist at iClear Wellife Services Ltd, has extensive experience delivering safe and reliable water treatment solutions for homes and offices across Kenya.
