Nandi County is in the North Rift of Kenya. Its capital Kapsabet is the largest town in the county while other towns include Mosoriot, Kaiboi,Kabiyet and Nandi Hills. The County borders Kakamega County, Bomet County, Kericho County and Uasingishu Counties.
The County covers an area of 2,884.4 square kilometres. According to census 2019, Nandi county has a population of 885,711 with 441259 males, 444430 females and 22 intersex with a population density of 301.1 per square kilometre.
There are three hospitals, 45 dispensaries, and 9 health care centers in Nandi. It has a doctor to population ratio of 1:94,000. The nurses to population ratio is 55 per 100,000 and 22 per 100,000 for the clinical officers. Nandi County has a 46.1% facility delivery and 59.2% of women in their reproductive age accessing contraceptive services.
WADADIA implements the Action on Fistula program in Nandi county providing fistula treatment in the area.