Yukon-Koyukuk (Ca) County contains 82 EPA-regulated facilities, 3 of which are currently flagged for significant noncompliance. The county also hosts 0 Superfund sites and 0 TRI chemical reporters. EPA has assessed $31.7k in lifetime penalties and TRI reporters disclosed roughly 0 lb of on-site releases. That facility count is well above the Alaska state average of 29 per county.