Is JOHNSTON CITY's water safe to drink?
JOHNSTON CITY had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 3,509 people through 1,913 service connections.
How this compares nationally
JOHNSTON CITY has 10 violations on record in total, 2 of thems health-based - ranking it 6,544th of 12,903 systems by violation count, the 49th percentile nationally.
How JOHNSTON CITY compares within IL
IL's 560 covered systems average 5.0 health-based violations each; JOHNSTON CITY carries 2, 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 JOHNSTON CITY is from 2026-10-08 (health-based: 2025-05-10). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
JOHNSTON CITY'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:
- Lead & copper - flagged from: LEAD AND COPPER RULE REVISIONS
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
This is what JOHNSTON CITY 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 JOHNSTON CITY's customers' taps is household plumbing, invisible to a system-level record ranked 6,544th of 12,903 by violation count. The guide to what this data misses covers that gap.