What's in ROCK FALLS's water?
ROCK FALLS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 8,620 people get their water from it, across 4,150 connections.
How this compares nationally
ROCK FALLS has 32 violations on record in total, 2 of thems health-based - ranking it 6,051th of 12,903 systems by violation count, the 53th percentile nationally.
Against the IL average
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - ROCK FALLS's 2 is at or below that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
ROCK FALLS's most recent violation on record is dated 2023-01-07, with the most recent health-based one dated 1984-01-06. Last reported to EPA: 05/27/2026.
The concern categories on record
ROCK FALLS'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:
- Other regulated metals - flagged from: Fluoride
The most severe category on record is other regulated metals, which points toward a reverse osmosis-class filter if you want to address it directly.
What ROCK FALLS's record does not cover
This is what ROCK FALLS 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 ROCK FALLS's customers' taps is household plumbing, invisible to a system-level record ranked 6,051th of 12,903 by violation count. The guide to what this data misses covers that gap.