The Utility Department of the City of Fort Smith, Arkansas ensures the sustained delivery of quality water and wastewater ser ... vices that promote health, safety, and quality of life for all of the Utility Department customers in the greater Fort Smith area. The City of Fort Smith is the second largest city in Arkansas with a population of 87,215. The Utility Department provides water and sewer service to a population of approximately 150,000 within the city limits and in the greater Fort Smith area either directly from Fort Smith's systems or indirectly through Fort Smith's wholesale customers. read more