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Water system · PWSID IA6000755

LYON-SIOUX RWS-BIG SIOUX

ROCK RAPIDS, IA · ~1,530 people served

Check your exact address → ROCK RAPIDS overview
100
Excellent
PurityRadar safety score

PWSID

IA6000755

State

Iowa

City

ROCK RAPIDS

Population served

1,530

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

Latest detections from EPA’s UCMR5 monitoring (through Oct 2025). Levels in parts per trillion (ppt).

Lithium

69,000 ppt

limit —

No federal limit

Violations & enforcement

15

Violations on record

0

Unaddressed

0

Health-based

71

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2022. Official EPA record →

Monitoring & reporting · Nitrite began Oct 2019 Resolved
Monitoring & reporting · Uranium began Jul 2012 Resolved
Monitoring & reporting · Nitrate began Jul 2010 Resolved
Monitoring & reporting · EPA contaminant 1085 began Jan 2005 Resolved
Monitoring & reporting · Fluoride began Jan 2005 Resolved
Monitoring & reporting · Selenium began Jan 2005 Resolved
Monitoring & reporting · Antimony began Jan 2005 Resolved
Monitoring & reporting · Beryllium began Jan 2005 Resolved
Monitoring & reporting · Arsenic began Jan 2005 Resolved
Monitoring & reporting · Barium began Jan 2005 Resolved
Monitoring & reporting · Cadmium began Jan 2005 Resolved
Monitoring & reporting · Chromium (total) began Jan 2005 Resolved

Recent enforcement actions

  • State action · SIF Aug 2022
  • State action · SOX Aug 2021
  • State action · SIE Aug 2021
  • State action · SFJ Aug 2021
  • State action · SIF Oct 2020
  • State action · SFJ Oct 2020
  • State action · SIE Oct 2020
  • State action · SOX Oct 2020

This profile is built from EPA public records for system IA6000755 — 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.