Ground Water from the basalt aquifers in the Sherwood, Dammasch-Wilsonville Ground Water Limited Area is classified for the following exempt uses only:
- Stock Watering.
- Lawn or non-commercial garden watering of not more than 1/2 acre in area.
- Single or group domestic purposes of no more than 15,000 gallons per day.
- Single industrial or commercial purposes not exceeding 5,000 gallons per day.
- Down-hole heat exchange uses.
The above uses shall not include the irrigation or landscape maintenance of more than 1/2 acre.