Culligan of Sioux City

About

Culligan of Sioux City | Local History & Water Treatment Serving Siouxland since 1939. 3rd-generation family-owned Culligan of Sioux City offers water softeners, RO drinking systems, & free in-home water testing. Company History: Culligan of Sioux City Culligan of Sioux City has provided residential, commercial, and industrial water treatment solutions across Northwest Iowa, Southeast South Dakota, and Northeast Nebraska for over 85 years. Founded in 1939 by John Coffey, the dealership has remained a dedicated, family-owned local enterprise across three generations of leadership—currently owned and operated by third-generation water expert Mark Coffey. Founded in 1939 by John Coffey, the dealership has remained a dedicated, family-owned local enterprise across three generations of leadership—currently owned and operated by third-generation water expert Mark Coffey. Historical Milestones & Legacy 1939 (Founding Era): Established by John Coffey to deliver soft water and filtration services to early Sioux City homes and agriculture. Family Ownership: Transitioned through three generations of the Coffey family, building over eight decades of local water expertise. Regional Service Expansion: Grew to serve thousands of residential and commercial clients across Woodbury, Plymouth, and surrounding tri-state counties.