Is NORTHFIELD's water safe to drink?
NORTHFIELD has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 5,470 people through 2,125 service connections.
How this compares nationally
Out of 12,903 systems in this dataset, NORTHFIELD ranks 9,016th by violation burden (30th percentile) - 3 violations total, 1 health-based.
How NORTHFIELD compares within IL
IL's 560 covered systems average 5.0 health-based violations each; NORTHFIELD carries 1, not more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for NORTHFIELD is from 2026-01-01 (health-based: 1992-07-12). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
NORTHFIELD'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
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 NORTHFIELD 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. This record - 1 health-based violation on file for NORTHFIELD - 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.