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OUR MISSION Promoting sustainable ground water development andmanagement for maximum beneficial use without waste or contamination. Become a Member Now Membership Application Oregon Ground Water Association Oregon Ground Water Association is a trade association for ground water professionals including well drilling pump and water treatment contractors manufacturers and suppliers technical associates and others with interest in the Oregons ground water industry. OGWA is dedicated to protecting promoting and educating the public about ground water. OGWA Picnic Campout August 810 2025 Pelton Park Madras OR Registration information coming soon.