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How to Read a Water Test Report: What Each Result Means

Herritech engineering teamUpdated 30 September 20263 min read

How to Read a Water Test Report: What Each Result Means
Pictured: handheld TDS meter (left) and pH meter (right) for daily water checks.
Quick answer: A water test report lists each parameter, your result and the allowed limit. Compare each result with the limit in the Kenyan drinking-water standard (ask the laboratory or KEBS). The most important lines are the bacteria results (E. coli must be absent), fluoride, TDS, iron and hardness, because they decide which treatment you need.
Key facts
  • Compare every result with the limit printed on the report
  • Bacteria (E. coli) must be absent in drinking water
  • Fluoride, TDS and salt → RO; iron → iron filter; hardness → softener
  • Confirm limits in the Kenyan standard with KEBS
On this page
  1. What each result tells you
  2. Test before and after treatment
  3. Water testing instruments
  4. Frequently asked questions

What each result tells you

ParameterIf it is highUsual treatment
E. coli / coliformsContaminated: not safe to drinkDisinfection (UV, chlorine) and fixing the source
TDS / conductivitySalty or mineral tasteRO
FluorideHealth risk over time (teeth and bones)RO
Iron / manganeseBrown stains, metallic tasteOxidation + media filter
HardnessScale on kettles, geysers, RO membranesSoftener
TurbidityCloudy water; stops UV workingSediment / sand filter
pHToo low: corrosive; too high: bitter tastepH correction

Test before and after treatment

Test the raw water to design the system, then test the treated water after installation to prove it works. Businesses selling water should test on a schedule and keep the reports.

Water testing instruments

Current listed prices incl. VAT (updated 30 September 2026). Full range: Water treatment components.

Next: borehole water treatment and safe TDS levels.

Watch: ro purifiers and water atms

Water ATM, bottle rinser and RO water purifierVideo · 1:16 · Herritech Ventures on YouTube
H-TECH 500 LPH 3-in-1 RO vending machineVideo · 0:23 · Herritech Ventures on YouTube

Frequently asked questions

Where can I get my water tested in Kenya?

Use an accredited laboratory; ask for the drinking-water parameters and limits.

What result means water is unsafe?

Any E. coli, or results above the limits for fluoride, nitrate or other health parameters.

Does a TDS meter replace a lab test?

No. A TDS meter is for daily checks; bacteria and fluoride need a laboratory test.

Can you design treatment from my report?

Yes. Send us the report and your daily litres and we will recommend a system.

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