What's in OREGON's water?
OREGON had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 3,449, over 1,569 connections.
Ranked against every other system in this dataset
OREGON has 11 violations on record in total, 4 of thems health-based - ranking it 4,384th of 12,903 systems by violation count, the 66th percentile nationally.
Against the IL average
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - OREGON's 4 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
OREGON's most recent violation on record is dated 2025-05-10, with the most recent health-based one dated 2025-05-10. Last reported to EPA: 05/27/2026.
The concern categories on record
OREGON'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)
- Radionuclides - flagged from: Combined Radium (-226 and -228)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What OREGON's record does not cover
Everything on this page is OREGON's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 11 logged violations can see. The guide to what this data misses covers that gap.