Table 4. Water Well Drillers Association of Maine recommended minimum depth of well for a given yield to supply a typical home with sufficient water. This guide assumes a standard 6-inch well where the static water level is at ground surface, and a family of 5 using 75 gallons each in one hour. It is very conservative in that 375 gallons of water would rarely be used in a single hour of the day.
Maximum available yield
of the drilled well | Minimum well depth needed
to supply typical home
with sufficient water |
| 5 gal/min | 0-50 feet |
| 4 | 51-100 |
| 3 | 101-150 |
| 2 | 151-200 |
| 1 | 201-300 |
| 1/2 | 301 and greater |
Last updated on March 26, 2009
