Avon Lake Regional Water provides water for more than 200,000 Ohio residents living in Lorain, Erie, Huron, Medina, Cuyahoga, Ashland and Wayne Counties. The 680 square mile service area includes the cities of Avon Lake, Avon, North Ridgeville, Village of Sheffield, Sheffield Lake, the City of Medina, and customers served by the Rural Lorain County Water Authority (RLCWA), and the Medina County Northwest Water System (MCNWS).