Households with Spring/Well/Borehole (number)
| 2009 |
| Kakamega | 248,628 |
| Bungoma | 212,514 |
| Kisii | 170,166 |
| Kiambu | 153,734 |
| Busia | 118,850 |
| Machakos | 114,074 |
| Uasin Gishu | 113,923 |
| Trans Nzoia | 110,386 |
| Nakuru | 106,202 |
| Kitui | 87,259 |
| Vihiga | 87,185 |
| Migori | 81,080 |
| Siaya | 77,281 |
| Kisumu | 76,589 |
| Turkana | 76,203 |
| Nairobi | 70,729 |
| Homa Bay | 66,615 |
| Nyamira | 66,466 |
| Nandi | 64,729 |
| Makueni | 64,460 |
| Wajir | 62,867 |
| Kajiado | 60,198 |
| Mombasa | 59,144 |
| Muranga | 57,400 |
| Nyandarua | 52,806 |
| Mandera | 51,713 |
| Garissa | 46,371 |
| Kwale | 45,131 |
| Bomet | 44,261 |
| Meru | 43,660 |
| Narok | 43,601 |
| Kilifi | 42,476 |
| Marsabit | 39,266 |
| Laikipia | 32,560 |
| Embu | 32,127 |
| Kericho | 31,603 |
| West Pokot | 26,259 |
| Samburu | 25,100 |
| Kirinyaga | 24,356 |
| Baringo | 22,901 |
| Tana River | 20,399 |
| Elgeyo Marakwet | 18,869 |
| Nyeri | 18,701 |
| Lamu | 11,402 |
| Isiolo | 11,018 |
| Tharaka Nithi | 7,828 |
| Taita Taveta | 7,532 |