C57/100
PORT BYRON — Water Quality Report 2026
Serving 1,678 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1610550
Violations
20
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.73 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
3
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – March 3, 2024Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About PORT BYRON
Is PORT BYRON water safe to drink?
PORT BYRON water receives a grade of C (57/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 20 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has PORT BYRON detected?
2 contaminants were tested in PORT BYRON's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does PORT BYRON have any EPA violations?
Yes, PORT BYRON has 20 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, MR. 3 are health-based violations.
How many people does PORT BYRON serve?
PORT BYRON serves approximately 1,678 people, Illinois. The system provides water to 1 community: Port Byron.
What type of water does PORT BYRON provide?
PORT BYRON sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1610550.
How does PORT BYRON compare to other utilities in Illinois?
PORT BYRON scores 57/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Illinois state page for a full comparison of water systems.