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Water system · PWSID IL0974340

DEERFIELD

DEERFIELD, IL · ~19,196 people served

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

PWSID

IL0974340

State

Illinois

City

DEERFIELD

Population served

19,196

Primary source

SWP

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

13

Violations on record

1

Unaddressed

4

Health-based

35

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2025 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2025 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Other · EPA contaminant 7000 began Jul 2022 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Other · EPA contaminant 7000 began Jul 2018 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2013 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2005 Resolved
Treatment technique · EPA contaminant 0300 health-based began Apr 2005 Resolved

Recent enforcement actions

  • State action · SIF Sep 2025
  • State action · SIA Aug 2025
  • State action · SOX May 2025
  • State action · SIE Apr 2025
  • State action · SIA Apr 2025
  • State action · SOX Jul 2024
  • State action · SIA Dec 2023
  • State action · SIA Jul 2022

This profile is built from EPA public records for system IL0974340 — 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.