Most villages have wells or springs where people congregate to fill buckets, but people still get sick from time to time. Gullies are used for latrines, which washes into the nearest stream, in addition to animal waste. Tuberculosis and veneral disease are also major health problems. AIDS is a serious problem in Lesotho. All the district capitals have hospitals, although they are pretty low key.
Dentists are likely to be found only in Maseru.
That's based on having the highest low point. Nepal has Mt. Everest, but it also has valleys lower than Lesotho. The lowest point in the country is 4900', about 40 miles south southwest of Maseru. Mt. Aux Sources, in the extreme northeast is the high point at 12000'. There are two sharply divided, distinct geographic parts of the country, divided along a north-south line.