Northfield

Northfield, MN · ~20,790 people served

Check your exact address → Northfield overview

100

Excellent

PurityRadar safety score

PWSID

MN1660010

State

Minnesota

City

Northfield

Population served

20,790

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 May 2024). Levels in parts per trillion (ppt).

Lithium

9,200 ppt

limit —

No federal limit

PFBA

8.5 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2014. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Jul 2014 Resolved

Recent enforcement actions

State action · SFJ Sep 2014
State action · SIE Sep 2014
State action · SOX Aug 2014
State action · SIA Oct 1989
State action · SIA Sep 1987
State action · SOX Sep 1984

This profile is built from EPA public records for system MN1660010 — 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.