CAMP DODGE WATER SUPPLY

JOHNSTON, IA · ~1,169 people served

Check your exact address → JOHNSTON overview

100

Excellent

PurityRadar safety score

PWSID

IA7700901

State

Iowa

City

JOHNSTON

Population served

1,169

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

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 Jul 2007. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2006 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2006 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2005 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2005 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2005 Resolved

Monitoring & reporting · Nitrate began Jul 1986 Resolved

Recent enforcement actions

State action · SOX Jul 2007
State action · SOX Jul 2007
State action · SOX Jul 2007
State action · SOX Jul 2007
State action · SOX Jul 2007
State action · SIE Aug 2006
State action · SIF Aug 2006
State action · SIE Jul 2006

This profile is built from EPA public records for system IA7700901 — 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.