What's in RIVERDALE's water?
RIVERDALE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 10,266 people get their water from it, across 3,311 connections.
How this compares nationally
RIVERDALE has 15 violations on record in total, 6 of thems health-based - ranking it 3,167th of 12,903 systems by violation count, the 75th percentile nationally.
Against the IL average
RIVERDALE's 6 health-based violations sit above the IL average of 5.0, across 560 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
RIVERDALE's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 2000-01-01. Last reported to EPA: 05/27/2026.
The concern categories on record
RIVERDALE'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
- 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 RIVERDALE's record does not cover
Everything on this page is RIVERDALE'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 RIVERDALE - 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.