Sun Prairie, WI vs Abbeville, AL

When comparing tap water quality between Sun Prairie, WI and Abbeville, AL, Sun Prairie currently holds a substantial 30-point lead in average WaterQ score, with a score of 78 out of 100 versus 48 for Abbeville. Sun Prairie, WI carries a B grade while Abbeville, AL carries a D. A WaterQ score reflects an aggregate of EPA-reported violations, monitoring data, and compliance history across all public water systems serving each city, so a higher score generally indicates fewer recent violations and a stronger compliance record, though it does not guarantee that every tap in the city tests identically.

Sun Prairie, WI is the larger of the two, with 18,408 more residents than Abbeville. Abbeville is served by 2 public water systems, compared with 1 in Sun Prairie — a difference of 1 system. A larger number of systems often reflects a more fragmented distribution network spanning multiple utilities, suburbs, or rural service areas, while a single large utility serving a big population can benefit from economies of scale in treatment and monitoring, but may also face more complex, aging infrastructure to maintain.

For residents of either Sun Prairie or Abbeville, the most useful next step is to look up the specific water system that serves your address, since city-wide averages combine results from every system in the area. Visit the Sun Prairie or Abbeville city pages below for a breakdown of local systems, recent violations, and contaminant-specific data, or browse WaterQ's contaminants directory to learn what each measured substance means for health.