Home/ Directory/ IA/ ROCK VALLEY WATER SUPPLY

Water system · PWSID IA8482096

ROCK VALLEY WATER SUPPLY

ROCK VALLEY, IA · ~4,059 people served

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

PWSID

IA8482096

State

Iowa

City

ROCK VALLEY

Population served

4,059

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 Jul 2025). Levels in parts per trillion (ppt).

Lithium

9,200 ppt

limit —

No federal limit

Violations & enforcement

18

Violations on record

0

Unaddressed

11

Health-based

96

Enforcement actions

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

Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2024 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2024 Resolved
Monitoring & reporting · Total coliform began Sep 2004 Resolved
Max contaminant level (MCL) · Nitrate health-based began Aug 2002 Resolved
Max contaminant level (MCL) · Nitrate health-based began Aug 2000 Resolved
Max contaminant level (MCL) · Nitrate health-based began May 2000 Resolved
Max contaminant level (MCL) · Nitrate health-based began Dec 1999 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jun 1999 Resolved
Monitoring & reporting · Nitrate began May 1999 Resolved
Max contaminant level (MCL) · Nitrate health-based began Sep 1998 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 1998 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1997 Resolved

Recent enforcement actions

  • State action · SOX Aug 2025
  • State action · SOX Aug 2025
  • State action · SIF Jun 2025
  • State action · SIF Jun 2025
  • State action · SFJ Oct 2024
  • State action · SIE Oct 2024
  • State action · SIE Oct 2024
  • State action · SFJ Oct 2024

This profile is built from EPA public records for system IA8482096 — 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.