D Hanis, TX vs Austin, TX

When comparing tap water quality between D Hanis, TX and Austin, TX, Austin currently holds a noticeable 12-point lead in average WaterQ score, with a score of 85 out of 100 versus 73 for D Hanis. D Hanis, TX carries a C grade while Austin, TX carries a B. 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.

Austin, TX is the larger of the two, with 1.6 million more residents than D Hanis. Austin is served by 138 public water systems, compared with 1 in D Hanis — a difference of 137 systems. 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 D Hanis or Austin, 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 Austin 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.