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Filtering Water for Drip Irrigation and Greenhouses in Kenya
- Sand/silt: media filter
- Final protection: disc or bag filter
- Iron: oxidise and filter
- Salty water: test before irrigating
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What Clogs Drippers
| Cause | Source | Fix |
|---|---|---|
| Sand, silt | Rivers, dams, new boreholes | Settling tank + media filter |
| Algae, organic matter | Open dams and tanks | Media filter; cover tanks; chlorinate lines |
| Iron (orange slime) | Boreholes | Aerate/oxidise, then filter (iron removal) |
| Scale (white crust) | Hard water | Acid flushing; check hardness |
Filters
Frp filter tankKSh 24,000
820 frp pressure vesselKSh 14,000
Stainless Steel Bag Filter HousingsKSh 60,000
Bag Filters for Stainless Steel Bag Filter HousingsKSh 1,600
H-TECH Filter Housing & Bag Filter RangeKSh 1,950| Product | Price |
|---|---|
| Frp filter tank | KSh 24,000 |
| 820 frp pressure vessel | KSh 14,000 |
| Stainless Steel Bag Filter Housings | KSh 60,000 |
| Bag Filters for Stainless Steel Bag Filter Housings | KSh 1,600 |
| H-TECH Filter Housing & Bag Filter Range | KSh 1,950 |
Current listed prices incl. VAT (updated 11 October 2026).
Filter types: bag and disc filters, FRP tank sizes and how to backwash a sand filter. Micron ratings: micron guide.
Salty Water and Crops
Salty water burns leaves and builds salt in the soil. Test EC/TDS before irrigating. RO is too costly for field irrigation but is used for hydroponics and nursery seedlings where clean water pays back. Never irrigate with concentrated RO reject.
Pumping
Solar pumps suit daytime irrigation: solar water pumps for farms. Size the pump for the filter’s pressure loss: pump size calculator.
Maintenance
- Backwash media filters when pressure drop rises.
- Clean disc and bag filters weekly in dirty seasons.
- Flush drip line ends monthly.
Frequently asked questions
Why are my drip lines clogging?
Usually sand and silt, algae from open water, or iron from boreholes.
Which filter is best for drip irrigation?
A media filter for dirty water plus a disc or bag filter before the lines.
How do I remove iron from irrigation water?
Aerate or oxidise the iron, then filter it out.
Can I irrigate with salty borehole water?
Test it first; very salty water damages crops and soil.
Is RO used for irrigation?
Only for high-value uses such as hydroponics and nurseries.