HARRIS COUNTY MUD 391: EPA violation history, explained

HARRIS COUNTY MUD 391's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 8,835 people get their water from it, across 2,945 connections.

Ranked against every other system in this dataset

5 total violations and 0 health-based ones put HARRIS COUNTY MUD 391 at the 14th percentile nationally for violation burden, rank 11,143 of 12,903.

Against the TX average

Among the 1,633 TX systems in this dataset, the average is 6.7 health-based violations - HARRIS COUNTY MUD 391's 0 is at or below that. See the lead and copper guide for why lead counts differently.

Most recent violation on record

HARRIS COUNTY MUD 391's most recent violation on record is dated 2006-01-04. Last reported to EPA: 06/26/2026.

What HARRIS COUNTY MUD 391's record does not cover

This is what HARRIS COUNTY MUD 391 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 HARRIS COUNTY MUD 391 - 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.