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Water system · PWSID IL1110100

CARY

CARY, IL · ~17,826 people served

Check your exact address → CARY overview
100
Excellent
PurityRadar safety score

PWSID

IL1110100

State

Illinois

City

CARY

Population served

17,826

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 May 2024). Levels in parts per trillion (ppt).

PFPeA

12 ppt

limit —

No federal limit

PFBA

7.4 ppt

limit —

No federal limit

PFHxA

6.9 ppt

limit —

No federal limit

6:2 FTS

5.7 ppt

limit —

No federal limit

PFHpA

4 ppt

limit —

No federal limit

Violations & enforcement

11

Violations on record

1

Unaddressed

7

Health-based

37

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2016 Resolved
Max contaminant level (MCL) · Barium health-based began Oct 1995 Resolved
Max contaminant level (MCL) · Barium health-based began Jul 1995 Resolved
Max contaminant level (MCL) · Barium health-based began Apr 1995 Resolved
Monitoring & reporting · Lead & Copper Rule began Apr 1993 Resolved
Treatment technique · Lead & Copper Rule health-based began Dec 1992 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 1992 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Oct 1984 Resolved
Max contaminant level (MCL) · Uranium health-based began Sep 1984 Resolved
Max contaminant level (MCL) · Barium health-based began Jun 1983 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SOX Jul 2016
  • State action · SIA Jul 2016
  • State action · SOX Mar 1996
  • State action · SIA Jan 1996
  • State action · SIE Jan 1996
  • State action · SIA Oct 1995
  • State action · SIE Oct 1995

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 May 2021

1.1 · max 1.1 ug/l · 1

Copper

1 station · latest May 2021

2.1 · max 2.1 ug/l · 1

Fluoride

1 station · latest May 2021

0.07 · max 0.07 mg/l · 1

Lead

1 station · latest May 2021

0.431 · max 0.431 ug/l · 1

Manganese

1 station · latest May 2021

38.1 · max 38.1 ug/l · 1

Uranium

1 station · latest May 2021

0.585 · max 0.585 ug/l · 1

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 IL1110100 — 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.