Is NORTHWEST HARRIS COUNTY MUD 21's water safe to drink?

NORTHWEST HARRIS COUNTY MUD 21's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 2,493 people through 1,377 service connections.

NORTHWEST HARRIS COUNTY MUD 21's record against the rest of the country

Out of 12,903 systems in this dataset, NORTHWEST HARRIS COUNTY MUD 21 ranks 12,178th by violation burden (6th percentile) - 2 violations total, 0 health-baseds.

How NORTHWEST HARRIS COUNTY MUD 21 compares within TX

NORTHWEST HARRIS COUNTY MUD 21's 0 health-based violations sit within the TX average of 6.7, across 1,633 systems statewide. See the lead and copper guide for why lead counts differently.

Most recent violation on record

The last violation EPA has on record for NORTHWEST HARRIS COUNTY MUD 21 is from 2011-01-10. Last reported to EPA: 06/26/2026.

What this data is and is not

This is what NORTHWEST HARRIS COUNTY MUD 21 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. Between the utility's meter and NORTHWEST HARRIS COUNTY MUD 21's customers' taps is household plumbing, invisible to a system-level record ranked 12,178th of 12,903 by violation count. The guide to what this data misses covers that gap.