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Water system · PWSID IL1615387

ROCK ISLAND ARSENAL, US ARMY

ROCK ISLAND, IL · ~7,800 people served

Check your exact address → ROCK ISLAND overview
88
Excellent
PurityRadar safety score

PWSID

IL1615387

State

Illinois

City

ROCK ISLAND

Population served

7,800

Primary source

Surface water

Score history

▼ 12 points — the score moved from 100 to 88 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 88

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 Nov 2023). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

4.6 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFBA

15 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

2

Health-based

37

Enforcement actions

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

Monitoring & reporting · Nitrate began Apr 2025 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2025 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2025 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2020 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2014 Resolved
Monitoring & reporting · Total coliform began Nov 2007 Resolved
Monitoring & reporting · EPA contaminant 1006 began Oct 2007 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Other · EPA contaminant 7000 began Jul 2003 Resolved

Recent enforcement actions

  • State action · SOX Aug 2025
  • State action · SIA Jul 2025
  • State action · SIE Jul 2025
  • State action · SIA Jul 2025
  • State action · SIE Jul 2025
  • State action · SOX Apr 2025
  • State action · SOX Feb 2021
  • State action · SIA Jan 2021

This profile is built from EPA public records for system IL1615387 — 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.