Water treatment is any process that makes water more acceptable for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment. Water treatment removes contaminants and undesirable components, or reduces their concentration so that the water becomes fit for its desired end-use. (for more go back to high-school geo class)

Since technology is always improving and many regions in our country can have access to water, we are left with no alternative than going for the tech to drill boreholes. Drilling boreholes doesn’t mean you get suitable water for drinking, but rather some tests need to be done.Some /most areas depending on the region have adequate water but with either lots of salinity or fluoride.

In case your borehole have such problems, just buy water treatment plant, which is expensive on the installation side but very cheap in terms of running/maintenance cost and repairs. some affected regions like Mombasa have opened up doors for the plants since salt water ends up being a major concern due to its effect on clothes, interior finishes, appliances and also gardening{reason you will find malnourished grass around Mombasa yet some bored guy is busy watering the plant}

lets see a simple example of the plant set up and cost:

1.Background and Requirements
[li]Water analysis report is needed. [/li]
[li]The water consumption is calculated based on maximum number of individuals probably present at any particular day following recommended WHO standards where consideration is based on an average usage of 200l/person/day. so, lets say you have a house with 5 -6 occupants.Considering all this the water shall be treated using [B]Reverse Osmosis/B at an average rate of 250 l/hr.[/li][/ul]
2.Recommended treatment process
To attain the quality of water recommended the following stages of treatment are used depending on the water quality;
[li]Water from the borehole will be disinfected inline by chlorination using an automatic dosing pump with 100l PE dosing tank as it flows into the raw water tank.[/li][li]The water will then be pH. adjusted (this depends on the water analysis report) inline using an automatic dosing pump with 100l PE dosing tank.[/li][li]This water will be pumped through a sand and carbon filter for removal of suspended solids and chlorine.[/li][li]To prevent scaling of the RO membranes, it will be important to dose an antiscalant into the water. Antiscalant will therefore be continuously added into the pipeline prior to the RO to prevent scaling. This will be done by a dosing pump mounted on a 100-litre PE solution tank.[/li][li]To prevent bio fouling of the RO membranes, it will be important to dose SMBS(SODIUM METABISULFITE) into the water. SMBS will therefore be continuously added into the pipeline prior to the RO to prevent fouling. This will be done by a chemical dosing pump mounted on a 100-litre PE solution tank.[/li][li]Finally, the “pretreated” water will then be passed through a Reverse Osmosis Unit to reduce the TDS and condition the water.[/li][li]Clean water from the RO will then be post chlorinated inline as it flows to the clean water storage tanks.[/li][/ul]
mbisha ya sketch ndio hii:
3. Pricing.
Roughly cost of such small set up of 250l/hr will be Kshs,901,600

4.Needed from the client.
[li]Supply and installation of raw water, and clean water tanks and their bases and support structures.[/li][li]Preparation of the raw water intake works from the source to the raw water tank.[/li][li]Piping of raw water from this tank to the plantroom.[/li][li]Provision of three phase power supply to the plantroom.[/li][li]Provision of a 2” inlet pipe from the raw water tank to the plantroom and 2” outlet pipe from the plant room to the clean water tank.[/li][li]Preparation of the plant room/structure dimensions 3m x 2m x 1.5m high to protect the equipment from adverse weather effects.[/li][li]Provision of a back-wash water and wash-out drainage and disposal.[/li][/ul]
5. installation.
Assembly of the plant is done within 2-3 weeks.

sorry for the long post safisheni macho na hii;

Informative write up.
From my kidogo experience, guys who live in flats consume around 80-100l per person per day. [SIZE=16px]250 labda wasee wako na their own compound.

that was based on own compound…forgot to mention that

lakini for that amount…it must be a very huuuge compound!

depends on water usage. pia its automated once the primary tank is full, it switches off…kama mko watatu no need for this.

Hii ni masomo poa sana. Ahsante.

Why go for a very big RO plant while you can buy one for the kitchen producing 25litresper hour at around 35k with uv included.

The demand for water treatment/recycling is so high such that davis has introduced a new product called bioliff that was launched at the recent homes expo.The product simply helps you recycle your waste/storm water …The price starts from 450k going upwards depending on the location…

Ecocyle Ltd also offers water treatment solutions.


That’s just marketing strategy to make you feel excited or maybe just a different way of recycling waste water in terms of tech, but recycling waste water have been around for quite sometime. Good thing with recycled waste on gardening, plants do extremely well as shown in the pics you have attached.

And by the way i don’t understand why davis guys are expensive than other firms in kenya. Maybe their advertising and branding have opened up market way before others came up, Can’t tell.

Yep, Davis prices itself high because many Kenyans confuse price with quality.

Sometimes the gap is ridiculous yet the product is the same and sourced from the same factory in China.

Depends on your region, and if you suspect you will be killed by water mafia (joking). Such i bet is good for regions with high fluoride compared to saline places. The above is based on coastal region where salt in water is such a big nuisance .

I agree with you.