JEFFERSON WATER DEPARTMENT

JEFFERSON, IA · ~4,182 people served

Check your exact address → JEFFERSON overview

100

Excellent

PurityRadar safety score

PWSID

IA3742004

State

Iowa

City

JEFFERSON

Population served

4,182

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 May 2021. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2020 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2020 Resolved

Monitoring & reporting · Nitrite began Apr 2019 Resolved

Monitoring & reporting · EPA contaminant 2991 began Jul 1997 Resolved

Monitoring & reporting · Total coliform began Jun 1996 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 1995 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

State action · SIF May 2021
State action · SIF May 2021
State action · SFJ Jun 2020
State action · SIE Jun 2020
State action · SFJ Jun 2020
State action · SIE Jun 2020
State action · SOX May 2020
State action · SOX May 2020

This profile is built from EPA public records for system IA3742004 — 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.