States ›Illinois ›Lake County ›Highland Park

Highland Park, IL Tap Water Quality 2026

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

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

Main Utility: Highland Park PWSID: IL0970500 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 11.00 ppb, 73% of the action level and no violations are open. No PFAS was detected.

B

Highland Park earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 11.00 ppb — 73% of the federal action level
PFAS tested, none detected
No violations since 2015
No violations currently open
Highland Park's lead level vs. all Illinois community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 11.00 ppb — 73% of the federal action level
✓ Lower lead than 7% of Illinois utilities
Population Served
26851
~10436 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
None on record since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
73% of EPA action level
11.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 11.00 ppb, 73% 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)

✓ No violations on record for this water system.
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

No violations are on record for this system since 2015. EPA records violations for every community water system, so this reflects a clean compliance history rather than missing data.

About the Main Water System

Utility Highland Park
PWSID IL0970500
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 26,851
Service connections 10,436
Systems serving this area 4
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Highland Park tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 11.00 ppb, 73% of the action level.
Does Highland Park water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Highland Park? ▼
Highland Park (PWSID IL0970500), one of 4 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2024-08-06. Inspectors recorded 1 significant deficiency.

What Should Highland Park 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.

Nearby Cities in Illinois

Waukegan, Il Tap Water Quality 2026 Lake Buffalo Grove, Il Tap Water Quality 2026 Lake Mundelein, Il Tap Water Quality 2026 Lake Gurnee, Il Tap Water Quality 2026 Lake North Chicago, Il Tap Water Quality 2026 Lake Round Lake Beach, Il Tap Water Quality 2026 Lake