HARRIS COUNTY WCID 21: EPA violation history, explained
HARRIS COUNTY WCID 21 has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 13,845 people get their water from it, across 4,434 connections.
How this compares nationally
11 total violations and 3 health-based ones put HARRIS COUNTY WCID 21 at the 59th percentile nationally for violation burden, rank 5,236 of 12,903.
How HARRIS COUNTY WCID 21 compares within TX
TX's 1,633 covered systems average 6.7 health-based violations each; HARRIS COUNTY WCID 21 carries 3, not more than typical for the state. 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 HARRIS COUNTY WCID 21 is from 2024-01-10 (health-based: 2016-01-01). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
HARRIS COUNTY WCID 21's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Disinfection byproducts - flagged from: TTHM
The most severe category on record is disinfection byproducts, which points toward a carbon-class filter if you want to address it directly.
What this data is and is not
HARRIS COUNTY WCID 21's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and HARRIS COUNTY WCID 21's customers' taps is household plumbing, invisible to a system-level record ranked 5,236th of 12,903 by violation count. The guide to what this data misses covers that gap.