SIENNA MUD 4: EPA violation history, explained

SIENNA MUD 4's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 6,435 people through 2,145 service connections.

Ranked against every other system in this dataset

Out of 12,903 systems in this dataset, SIENNA MUD 4 ranks 10,099th by violation burden (22th percentile) - 17 violations total, 0 health-baseds.

How SIENNA MUD 4 compares within TX

Among the 1,633 TX systems in this dataset, the average is 6.7 health-based violations - SIENNA MUD 4's 0 is at or below that. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

The last violation EPA has on record for SIENNA MUD 4 is from 2025-01-11. Last reported to EPA: 06/26/2026.

What this data is and is not

This is what SIENNA MUD 4 reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 0 health-based violations on file for SIENNA MUD 4 - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.