DECATUR

DECATUR, IL · ~76,122 people served

Check your exact address → DECATUR overview

100

Excellent

PurityRadar safety score

PWSID

IL1150150

State

Illinois

City

DECATUR

Population served

76,122

Primary source

Surface water

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 Aug 2024. Official EPA record →

Monitoring & reporting · EPA contaminant 1009 began Oct 2023 Resolved

Max contaminant level (MCL) · Nitrate health-based began Apr 2002 Resolved

Max contaminant level (MCL) · Nitrate health-based began Jan 2002 Resolved

Max contaminant level (MCL) · Nitrate health-based began Apr 2001 Resolved

Max contaminant level (MCL) · Nitrate health-based began Jan 2001 Resolved

Max contaminant level (MCL) · Nitrate health-based began Apr 1999 Resolved

Max contaminant level (MCL) · Nitrate health-based began Apr 1998 Resolved

Max contaminant level (MCL) · Nitrate health-based began Jul 1997 Resolved

Max contaminant level (MCL) · Nitrate health-based began Jul 1996 Resolved

Max contaminant level (MCL) · Nitrate health-based began Apr 1996 Resolved

Max contaminant level (MCL) · Nitrate health-based began Jun 1992 Resolved

Max contaminant level (MCL) · Nitrate health-based began May 1992 Resolved

Recent enforcement actions

State action · SIF Aug 2024
State action · SOX Mar 2024
State action · SIA Jan 2024
State action · SIE Jan 2024
State action · SIA Jul 2002
State action · SIE Jul 2002
State action · SOX Jun 2002
State action · SIE Mar 2002

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

Nitrate

1 station · latest Apr 2023

2.74 · max 7.58 mg/l as N · 12

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 IL1150150 — 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.