Here are some useful resources for well owners and prospective well owners in Washington State:

1. Washington State Department of Ecology - Water Resources Program: The Department of Ecology's website provides a wealth of information on well drilling regulations, permits, and water rights in Washington State. They offer resources for well owners and those interested in drilling new wells.Website: Washington State Department of Ecology - Water Resources Program
2. Washington State Department of Health - Private Wells: The Department of Health provides guidance on well water safety, including information on well construction, water testing, and maintenance. They also offer resources for interpreting water test results.Website: Washington State Department of Health - Private Wells
3. Washington State Ground Water Association: This professional organization offers resources for both well owners and well drilling professionals. They provide information on well maintenance, drilling best practices, and finding qualified well drillers in your area.Website: Washington State Ground Water Association
4. National Ground Water Association (NGWA): While not specific to Washington, the NGWA offers a wide range of resources on well drilling, well maintenance, water quality, and more. Their resources can be valuable for well owners in any state.Website: National Ground Water Association
5. Local Health Departments: Many local health departments in Washington State provide resources and information related to private well ownership, water quality, and regulations. Contact your local health department for region-specific information.

These resources can help well owners and prospective well owners in Washington State navigate the complexities of private well ownership, ensuring that their water supply remains safe and reliable.