D Hanis, TX vs Addison, AL

When comparing tap water quality between D Hanis, TX and Addison, AL, Addison currently holds a substantial 27-point lead in average WaterQ score, with a score of 100 out of 100 versus 73 for D Hanis. D Hanis, TX carries a C grade while Addison, AL carries an A. 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.

Addison, AL is the larger of the two, with 939 more residents than D Hanis, yet both cities are served by the same number of public water systems (1). This means the difference in population is handled by systems of different scale rather than a different count of utilities — larger systems generally serve more connections and may have more monitoring requirements under the Safe Drinking Water Act.

For residents of either D Hanis or Addison, 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 D Hanis or Addison 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.