WALNUT

WALNUT, IL · ~1,311 people served

Check your exact address → WALNUT overview

100

Excellent

PurityRadar safety score

PWSID

IL0111100

State

Illinois

City

WALNUT

Population served

1,311

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

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 Sep 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2024 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2024 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2024 Resolved

Other · EPA contaminant 7000 began Jul 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2022 Resolved

Treatment technique · Lead & Copper Rule health-based began Jul 2019 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2010 Resolved

Recent enforcement actions

State action · SIF Sep 2025
State action · SIF Sep 2025
State action · SOX Aug 2025
State action · SOX Jun 2025
State action · SIA Oct 2024
State action · SIE Oct 2024
State action · SIA Oct 2024
State action · SIE Oct 2024

This profile is built from EPA public records for system IL0111100 — 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.