Borehole water quality testing measures the physical, chemical and biological characteristics of your water. In Ghana, it matters — because some ground conditions create contamination risks that are completely invisible, tasteless and odourless. A 2020 study of boreholes in Dodowa, Greater Accra found the majority sampled were contaminated with faecal matter. None of those borehole owners knew without testing.
Ghana's National Water Policy confirms: Elevated iron and fluoride in Western, Northern and Upper East regions. Saline intrusion in coastal Greater Accra and Central Region. Bacterial contamination anywhere boreholes are sited near latrines or septic systems — which is a siting issue, not a geological one, and preventable with a proper pre-drill survey.
Key Parameters and What They Mean in Ghana
| Parameter | Why it matters | Risk areas in Ghana |
|---|---|---|
| Iron (Fe) | Stains laundry orange. Affects taste. Clogs drip irrigation. | Western, Eastern, Ashanti |
| Fluoride (F) | High levels cause dental and skeletal fluorosis over time. | Northern, Upper East, Upper West |
| Salinity / TDS | Makes water undrinkable. Damages crops. | Greater Accra coast, Central Region coast |
| E. coli / coliforms | Faecal contamination. Immediate health risk. | All regions — related to siting, not geology |
| pH | Outside 6.5–8.5 corrodes pipes or affects irrigation. | Variable across Ghana |
| Nitrates | Agricultural run-off risk. Dangerous to infants. | Northern Region, agricultural areas |
| Manganese (Mn) | Staining and neurological concern at high levels. | Volta Region, some Ashanti areas |
What to Do With Your Results
- Iron high — fit an iron removal filter before your storage tank
- Fluoride high — reverse osmosis or activated alumina filtration required
- Bacteria present — UV steriliser or chlorination required; investigate siting distance from latrines
- Salinity/TDS high — reverse osmosis for drinking; assess whether usable for irrigation at all
- All parameters within WHO/Ghana standard — safe to use. Retest every 6–12 months.
For a full treatment guide: Borehole water treatment in Ghana — which system solves which problem.
Need a borehole water quality test?
AquaProbe includes water quality risk assessment with every site survey and takes independent water samples on completion of every borehole. WhatsApp us to arrange standalone testing for an existing borehole.
Book a water quality test →Frequently Asked Questions
How often should I test my borehole water?
Every 6–12 months for drinking water boreholes. Also test after any flood event, nearby construction, or any change in water colour, taste or smell.
Does clear borehole water mean it is safe?
No. Fluoride, nitrates, bacteria and some heavy metals are completely colourless and odourless. Only a laboratory test confirms safety.
What is the difference between this page and the water treatment page?
This page covers understanding your test results. The water treatment guide covers which treatment system to use for each specific problem.