MISSION BROOK SD: EPA violation history, explained
MISSION BROOK SD has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 2,852, over 525 connections.
How this compares nationally
11 total violations and 6 health-based ones put MISSION BROOK SD at the 75th percentile nationally for violation burden, rank 3,248 of 12,903.
Against the IL average
IL's 560 covered systems average 5.0 health-based violations each; MISSION BROOK SD carries 6, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
MISSION BROOK SD's most recent violation on record is dated 2025-05-10, with the most recent health-based one dated 1994-01-12. Last reported to EPA: 05/27/2026.
The concern categories on record
MISSION BROOK SD'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:
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.
What MISSION BROOK SD's record does not cover
Everything on this page is MISSION BROOK SD's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 6 health-based violations on file for MISSION BROOK SD - 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.