The easement would have little effect on home value. Most clients I work with would not object to a water easement. Other easements that take up more room such as power supply, electrical boxes etc, have some effect but it highly depends on the type of community you are in. If the homes are close together and the front yard is only 10X20 and the easement takes up 1/4 or more of the space it could detour some buyers.
If you can able to add flowers/ small shrubs to distract from the area. As far as the county is concerned you can plant bushes and flowers as long as they can gain access to the area.
Farah de Verteuil\
John L Scott Market Center