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Water system · PWSID IL1110200

FOX RIVER GROVE

FOX RIVER GROVE, IL · ~4,702 people served

Check your exact address → FOX RIVER GROVE overview
100
Excellent
PurityRadar safety score

PWSID

IL1110200

State

Illinois

City

FOX RIVER GROVE

Population served

4,702

Primary source

Groundwater

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

Latest detections from EPA’s UCMR5 monitoring (through Sep 2023). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

4.5 ppt

limit 10 ppt

Below EPA limit

PFPeA

5.6 ppt

limit —

No federal limit

PFBA

5.2 ppt

limit —

No federal limit

PFHxA

3.7 ppt

limit —

No federal limit

Violations & enforcement

7

Violations on record

0

Unaddressed

3

Health-based

25

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2021. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2009 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2008 Resolved
Treatment technique · Lead & Copper Rule health-based began Jan 2006 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2004 Resolved
Treatment technique · Lead & Copper Rule health-based began Dec 1992 Resolved

Recent enforcement actions

  • State action · SOX Jul 2021
  • State action · SFK Apr 2021
  • State action · SIF Mar 2021
  • State action · SFJ Feb 2021
  • State action · SIA Feb 2021
  • State action · SIE Feb 2021
  • State action · SOX Jun 2015
  • State action · SIA Sep 2014

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Arsenic

1 station · latest Jul 2022

1.87 · max 2.14 ug/L · 4

Manganese

1 station · latest Jul 2022

33 · max 50 ug/L · 4

Fluoride

1 station · latest Jul 2022

0.155 · max 0.18 mg/L · 2

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system IL1110200 — 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.