What's in MONMOUTH's water?
MONMOUTH had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 8,902 people get their water from it, across 3,800 connections.
MONMOUTH's record against the rest of the country
Out of 12,903 systems in this dataset, MONMOUTH ranks 607th by violation burden (95th percentile) - 33 violations total, 29 health-baseds.
How MONMOUTH compares within IL
IL's 560 covered systems average 5.0 health-based violations each; MONMOUTH carries 29, more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for MONMOUTH is from 2026-04-11 (health-based: 2024-01-10). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
MONMOUTH'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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
- Other regulated metals - flagged from: Fluoride
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
MONMOUTH's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 29 health-based violations on file for MONMOUTH - 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.