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Percy, IL Tap Water Quality 2026

Water quality report for Percy, IL — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Percy's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Percy PWSID: IL1570350 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 8.30 ppb, 55% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Percy earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 8.30 ppb — 55% of the federal action level
PFAS never sampled at this system
6 violations since 2015, 0 health-based
No violations currently open
Percy's lead level vs. all Illinois community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 8.30 ppb — 55% of the federal action level
✓ Lower lead than 14% of Illinois utilities
Population Served
889
~372 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
6 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
55% of EPA action level
8.30 ppb
Action level: 15 ppb
The 90th-percentile lead result is 8.30 ppb, 55% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Nitrate MONITORING AND REPORTING — 10 mg/L 2025 Archived
Nitrite MONITORING AND REPORTING — 1 mg/L 2025 Archived
Public Notice OTHER — — 2025 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2023 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

6 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Percy
PWSID IL1570350
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 889
Service connections 372
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Percy tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 8.30 ppb, 55% of the action level.
Does Percy water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Percy? ▼
Percy (PWSID IL1570350). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-11-06. Inspectors recorded 4 significant deficiencies.

What Should Percy Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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