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Water system · PWSID IL1150350

MOUNT ZION

MOUNT ZION, IL · ~5,833 people served

Check your exact address → MOUNT ZION overview
100
Excellent
PurityRadar safety score

PWSID

IL1150350

State

Illinois

City

MOUNT ZION

Population served

5,833

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

Latest detections from EPA’s UCMR5 monitoring (through Oct 2024). Levels in parts per trillion (ppt).

PFPeA

3.4 ppt

limit —

No federal limit

Violations & enforcement

33

Violations on record

0

Unaddressed

27

Health-based

122

Enforcement actions

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

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2022 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2022 Resolved
Other · EPA contaminant 7500 began Dec 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Dec 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2021 Resolved
Treatment technique · Lead & Copper Rule health-based began Jun 2021 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2019 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved

Recent enforcement actions

  • State action · SOX Mar 2025
  • State action · SIF Jan 2025
  • State action · SIA Dec 2024
  • State action · SIE Dec 2024
  • State action · SIF Nov 2024
  • State action · SIE Sep 2024
  • State action · SIA Sep 2024
  • State action · SIF Aug 2024

This profile is built from EPA public records for system IL1150350 — 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.