LAKE FOREST

LAKE FOREST, IL · ~19,642 people served

Check your exact address → LAKE FOREST overview

100

Excellent

PurityRadar safety score

PWSID

IL0970800

State

Illinois

City

LAKE FOREST

Population served

19,642

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Feb 2019 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Feb 2019 Resolved

Other · EPA contaminant 7000 began Jul 2017 Resolved

Monitoring & reporting · Bromate began Jul 2004 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1994 Resolved

Treatment technique · Lead & Copper Rule health-based began Dec 1992 Resolved

Recent enforcement actions

State action · SIF Jul 2024
State action · SOX Feb 2024
State action · SIE Oct 2023
State action · SIA Oct 2023
State action · SIF Jun 2020
State action · SOX Aug 2019
State action · SIE Jul 2019
State action · SIA Jul 2019

This profile is built from EPA public records for system IL0970800 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.